21111012011022 has 16 divisors (see below), whose sum is σ = 42222085645440. Its totient is φ = 7036993733112.

The previous prime is 21111012010973. The next prime is 21111012011039. The reversal of 21111012011022 is 22011021011112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21111012010992 and 21111012011010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2725173 + ... + 7046175.

It is an arithmetic number, because the mean of its divisors is an integer number (2638880352840).

Almost surely, 2^{21111012011022} is an apocalyptic number.

21111012011022 is an abundant number, since it is smaller than the sum of its proper divisors (21111073634418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21111012011022 is a wasteful number, since it uses less digits than its factorization.

21111012011022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5135287.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 21111012011022 its reverse (22011021011112), we get a palindrome (43122033022134).

The spelling of 21111012011022 in words is "twenty-one trillion, one hundred eleven billion, twelve million, eleven thousand, twenty-two".