221112012211012 has 12 divisors (see below), whose sum is σ = 416711099936236. Its totient is φ = 102051697943520.

The previous prime is 221112012211009. The next prime is 221112012211021. The reversal of 221112012211012 is 210112210211122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 79112948546116 + 141999063664896 = 8894546^2 + 11916336^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2126077040439 + ... + 2126077040542.

Almost surely, 2^{221112012211012} is an apocalyptic number.

It is an amenable number.

221112012211012 is a deficient number, since it is larger than the sum of its proper divisors (195599087725224).

221112012211012 is a wasteful number, since it uses less digits than its factorization.

221112012211012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4252154080998 (or 4252154080996 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 221112012211012 its reverse (210112210211122), we get a palindrome (431224222422134).

The spelling of 221112012211012 in words is "two hundred twenty-one trillion, one hundred twelve billion, twelve million, two hundred eleven thousand, twelve".