21122012222110 has 16 divisors (see below), whose sum is σ = 38027267297856. Its totient is φ = 8447105933728.

The previous prime is 21122012222099. The next prime is 21122012222173. The reversal of 21122012222110 is 1122221022112.

It is a super-2 number, since 2×21122012222110² (a number of 27 digits) contains 22 as substring.

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, 212317174 + ... + 212416633.

It is an arithmetic number, because the mean of its divisors is an integer number (2376704206116).

Almost surely, 2^{21122012222110} is an apocalyptic number.

21122012222110 is a deficient number, since it is larger than the sum of its proper divisors (16905255075746).

21122012222110 is a wasteful number, since it uses less digits than its factorization.

21122012222110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424738787.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 21122012222110 its reverse (1122221022112), we get a palindrome (22244233244222).

The spelling of 21122012222110 in words is "twenty-one trillion, one hundred twenty-two billion, twelve million, two hundred twenty-two thousand, one hundred ten".