22121332112210 has 32 divisors (see below), whose sum is σ = 42164846933040. Its totient is φ = 8327203172352.

The previous prime is 22121332112207. The next prime is 22121332112267. The reversal of 22121332112210 is 1221123312122.

It can be written as a sum of positive squares in 8 ways, for example, as 5002500337129 + 17118831775081 = 2236627^2 + 4137491^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4749959 + ... + 8173418.

Almost surely, 2^{22121332112210} is an apocalyptic number.

22121332112210 is a deficient number, since it is larger than the sum of its proper divisors (20043514820830).

22121332112210 is a wasteful number, since it uses less digits than its factorization.

22121332112210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12933470.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 22121332112210 its reverse (1221123312122), we get a palindrome (23342455424332).

The spelling of 22121332112210 in words is "twenty-two trillion, one hundred twenty-one billion, three hundred thirty-two million, one hundred twelve thousand, two hundred ten".