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13021233001 = 72265739449
BaseRepresentation
bin11000010000010000…
…00011111101101001
31020121110202011122221
430020020003331221
5203131413424001
65552030114041
7640451440300
oct141010037551
936543664587
1013021233001
115582168097
12263494b921
1312c68c73ca
148b74d5437
155132481a1
hex308203f69

13021233001 has 6 divisors (see below), whose sum is σ = 15147148650. Its totient is φ = 11161056816.

The previous prime is 13021232993. The next prime is 13021233037. The reversal of 13021233001 is 10033212031.

It can be written as a sum of positive squares in only one way, i.e., 12927917401 + 93315600 = 113701^2 + 9660^2 .

It is not a de Polignac number, because 13021233001 - 23 = 13021232993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13021333001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 132869676 + ... + 132869773.

It is an arithmetic number, because the mean of its divisors is an integer number (2524524775).

Almost surely, 213021233001 is an apocalyptic number.

It is an amenable number.

13021233001 is a deficient number, since it is larger than the sum of its proper divisors (2125915649).

13021233001 is an equidigital number, since it uses as much as digits as its factorization.

13021233001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265739463 (or 265739456 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 13021233001 its reverse (10033212031), we get a palindrome (23054445032).

The spelling of 13021233001 in words is "thirteen billion, twenty-one million, two hundred thirty-three thousand, one".

Divisors: 1 7 49 265739449 1860176143 13021233001