21022112110 has 16 divisors (see below), whose sum is σ = 40065672816. Its totient is φ = 7914206848.

The previous prime is 21022112101. The next prime is 21022112117. The reversal of 21022112110 is 1121122012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022112117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61829572 + ... + 61829911.

It is an arithmetic number, because the mean of its divisors is an integer number (2504104551).

Almost surely, 2^21022112110 is an apocalyptic number.

21022112110 is a deficient number, since it is larger than the sum of its proper divisors (19043560706).

21022112110 is a wasteful number, since it uses less digits than its factorization.

21022112110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123659507.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21022112110 its reverse (1121122012), we get a palindrome (22143234122).

The spelling of 21022112110 in words is "twenty-one billion, twenty-two million, one hundred twelve thousand, one hundred ten".