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21120133310231 is a prime number
BaseRepresentation
bin1001100110101011010100…
…00010110010011100010111
32202210001202101220101220012
410303111222002302130113
510232013013111411411
6112530242202230435
74306610410041614
oct463255202623427
982701671811805
1021120133310231
116802aa871aa9a
122451281ab541b
13ba280a271017
145303115cd50b
152695b313718b
hex13356a0b2717

21120133310231 has 2 divisors, whose sum is σ = 21120133310232. Its totient is φ = 21120133310230.

The previous prime is 21120133310219. The next prime is 21120133310251. The reversal of 21120133310231 is 13201333102112.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-21120133310231 is a prime.

It is a super-2 number, since 2×211201333102312 (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21120133310197 and 21120133310206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21120133310251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10560066655115 + 10560066655116.

It is an arithmetic number, because the mean of its divisors is an integer number (10560066655116).

Almost surely, 221120133310231 is an apocalyptic number.

21120133310231 is a deficient number, since it is larger than the sum of its proper divisors (1).

21120133310231 is an equidigital number, since it uses as much as digits as its factorization.

21120133310231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 21120133310231 its reverse (13201333102112), we get a palindrome (34321466412343).

The spelling of 21120133310231 in words is "twenty-one trillion, one hundred twenty billion, one hundred thirty-three million, three hundred ten thousand, two hundred thirty-one".