21102012111022 has 8 divisors (see below), whose sum is σ = 31654076142672. Its totient is φ = 10550653396800.

The previous prime is 21102012110987. The next prime is 21102012111023. The reversal of 21102012111022 is 22011121020112.

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

It is a junction number, because it is equal to n+sod(n) for n = 21102012110987 and 21102012111005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21102012111023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176254554 + ... + 176374237.

It is an arithmetic number, because the mean of its divisors is an integer number (3956759517834).

Almost surely, 2^{21102012111022} is an apocalyptic number.

21102012111022 is a deficient number, since it is larger than the sum of its proper divisors (10552064031650).

21102012111022 is a wasteful number, since it uses less digits than its factorization.

21102012111022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352658714.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21102012111022 its reverse (22011121020112), we get a palindrome (43113133131134).

The spelling of 21102012111022 in words is "twenty-one trillion, one hundred two billion, twelve million, one hundred eleven thousand, twenty-two".