21211102022012 has 24 divisors (see below), whose sum is σ = 44266647699456. Its totient is φ = 8695234369008.

The previous prime is 21211102021957. The next prime is 21211102022041. The reversal of 21211102022012 is 21022020111212.

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, 16468246268 + ... + 16468247555.

It is an arithmetic number, because the mean of its divisors is an integer number (1844443654144).

Almost surely, 2^{21211102022012} is an apocalyptic number.

It is an amenable number.

21211102022012 is an abundant number, since it is smaller than the sum of its proper divisors (23055545677444).

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

21211102022012 is a wasteful number, since it uses less digits than its factorization.

21211102022012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32936493857 (or 32936493855 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21211102022012 its reverse (21022020111212), we get a palindrome (42233122133224).

The spelling of 21211102022012 in words is "twenty-one trillion, two hundred eleven billion, one hundred two million, twenty-two thousand, twelve".