21121202100110 has 64 divisors (see below), whose sum is σ = 43692249968640. Its totient is φ = 7201073612160.

The previous prime is 21121202100109. The next prime is 21121202100127. The reversal of 21121202100110 is 1100120212112.

It is a super-2 number, since 2×21121202100110² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231650711 + ... + 231741869.

It is an arithmetic number, because the mean of its divisors is an integer number (682691405760).

Almost surely, 2^{21121202100110} is an apocalyptic number.

21121202100110 is an abundant number, since it is smaller than the sum of its proper divisors (22571047868530).

21121202100110 is a wasteful number, since it uses less digits than its factorization.

21121202100110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109641.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21121202100110 its reverse (1100120212112), we get a palindrome (22221322312222).

The spelling of 21121202100110 in words is "twenty-one trillion, one hundred twenty-one billion, two hundred two million, one hundred thousand, one hundred ten".