21113310011231 has 8 divisors (see below), whose sum is σ = 21117894255744. Its totient is φ = 21108726028800.

The previous prime is 21113310011177. The next prime is 21113310011291. The reversal of 21113310011231 is 13211001331112.

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

It is a cyclic number.

It is not a de Polignac number, because 21113310011231 - 2²² = 21113305816927 is a prime.

It is a super-2 number, since 2×21113310011231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113310011291) 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, 304925591 + ... + 304994823.

It is an arithmetic number, because the mean of its divisors is an integer number (2639736781968).

Almost surely, 2^{21113310011231} is an apocalyptic number.

21113310011231 is a deficient number, since it is larger than the sum of its proper divisors (4584244513).

21113310011231 is an equidigital number, since it uses as much as digits as its factorization.

21113310011231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131041.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 21113310011231 its reverse (13211001331112), we get a palindrome (34324311342343).

The spelling of 21113310011231 in words is "twenty-one trillion, one hundred thirteen billion, three hundred ten million, eleven thousand, two hundred thirty-one".