21113022031113 has 32 divisors (see below), whose sum is σ = 28683615744000. Its totient is φ = 13811211400896.

The previous prime is 21113022031067. The next prime is 21113022031117. The reversal of 21113022031113 is 31113022031112.

It is not a de Polignac number, because 21113022031113 - 2⁸ = 21113022030857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21113022031113.

It is not an unprimeable number, because it can be changed into a prime (21113022031117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 627991818 + ... + 628025436.

It is an arithmetic number, because the mean of its divisors is an integer number (896362992000).

Almost surely, 2^{21113022031113} is an apocalyptic number.

It is an amenable number.

21113022031113 is a deficient number, since it is larger than the sum of its proper divisors (7570593712887).

21113022031113 is a wasteful number, since it uses less digits than its factorization.

21113022031113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50781.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 21113022031113 its reverse (31113022031112), we get a palindrome (52226044062225).

Subtracting 21113022031113 from its reverse (31113022031112), we obtain a palindrome (9999999999999).

The spelling of 21113022031113 in words is "twenty-one trillion, one hundred thirteen billion, twenty-two million, thirty-one thousand, one hundred thirteen".