21022110102 has 64 divisors (see below), whose sum is σ = 48610934784. Its totient is φ = 5936626080.

The previous prime is 21022110091. The next prime is 21022110107. The reversal of 21022110102 is 20101122012.

It is a super-2 number, since 2×21022110102² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022110107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1438243 + ... + 1452785.

It is an arithmetic number, because the mean of its divisors is an integer number (759545856).

Almost surely, 2^21022110102 is an apocalyptic number.

21022110102 is an abundant number, since it is smaller than the sum of its proper divisors (27588824682).

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

21022110102 is a wasteful number, since it uses less digits than its factorization.

21022110102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14953.

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

Adding to 21022110102 its reverse (20101122012), we get a palindrome (41123232114).

The spelling of 21022110102 in words is "twenty-one billion, twenty-two million, one hundred ten thousand, one hundred two".