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13121130203233 = 132164946621909
BaseRepresentation
bin1011111011110000000001…
…0011100000100001100001
31201110100221010100102010221
42332330000103200201201
53204434033313000413
643523433005123041
72522653560343063
oct276740023404141
951410833312127
1013121130203233
1141a9704a29278
12157ab67b59481
13742418069aa0
143350cd4cd733
1517b49d98c68d
hexbef004e0861

13121130203233 has 8 divisors (see below), whose sum is σ = 14131100921000. Its totient is φ = 12111252772608.

The previous prime is 13121130203197. The next prime is 13121130203243. The reversal of 13121130203233 is 33230203112131.

It can be written as a sum of positive squares in 4 ways, for example, as 2028553578529 + 11092576624704 = 1424273^2 + 3330552^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13121130203233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13121130203198 and 13121130203207.

It is not an unprimeable number, because it can be changed into a prime (13121130203243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23029518 + ... + 23592391.

It is an arithmetic number, because the mean of its divisors is an integer number (1766387615125).

Almost surely, 213121130203233 is an apocalyptic number.

13121130203233 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13121130203233 is a deficient number, since it is larger than the sum of its proper divisors (1009970717767).

13121130203233 is a wasteful number, since it uses less digits than its factorization.

13121130203233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46643571.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 13121130203233 its reverse (33230203112131), we get a palindrome (46351333315364).

The spelling of 13121130203233 in words is "thirteen trillion, one hundred twenty-one billion, one hundred thirty million, two hundred three thousand, two hundred thirty-three".

Divisors: 1 13 21649 281437 46621909 606084817 1009317707941 13121130203233