21222012012110 has 32 divisors (see below), whose sum is σ = 47014918921152. Its totient is φ = 6716416988160.

The previous prime is 21222012012079. The next prime is 21222012012221. The reversal of 21222012012110 is 1121021022212.

It is a super-2 number, since 2×21222012012110² (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 15 ways as a sum of consecutive naturals, for example, 11660445251 + ... + 11660447070.

It is an arithmetic number, because the mean of its divisors is an integer number (1469216216286).

Almost surely, 2^{21222012012110} is an apocalyptic number.

21222012012110 is an abundant number, since it is smaller than the sum of its proper divisors (25792906909042).

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

21222012012110 is a wasteful number, since it uses less digits than its factorization.

21222012012110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23320892348.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21222012012110 its reverse (1121021022212), we get a palindrome (22343033034322).

The spelling of 21222012012110 in words is "twenty-one trillion, two hundred twenty-two billion, twelve million, twelve thousand, one hundred ten".