21102022110 has 32 divisors (see below), whose sum is σ = 54540612000. Its totient is φ = 5194343808.

The previous prime is 21102022087. The next prime is 21102022111. The reversal of 21102022110 is 1122020112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21102022111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27053485 + ... + 27054264.

It is an arithmetic number, because the mean of its divisors is an integer number (1704394125).

Almost surely, 2^21102022110 is an apocalyptic number.

21102022110 is an abundant number, since it is smaller than the sum of its proper divisors (33438589890).

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

21102022110 is a wasteful number, since it uses less digits than its factorization.

21102022110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54107772.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21102022110 its reverse (1122020112), we get a palindrome (22224042222).

The spelling of 21102022110 in words is "twenty-one billion, one hundred two million, twenty-two thousand, one hundred ten".