12221110011212 has 48 divisors (see below), whose sum is σ = 21940886016000. Its totient is φ = 5952729536640.

The previous prime is 12221110011193. The next prime is 12221110011233. The reversal of 12221110011212 is 21211001112221.

It is a super-2 number, since 2×12221110011212² (a number of 27 digits) contains 22 as substring.

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, 517853789 + ... + 517877387.

It is an arithmetic number, because the mean of its divisors is an integer number (457101792000).

Almost surely, 2^{12221110011212} is an apocalyptic number.

It is an amenable number.

12221110011212 is a deficient number, since it is larger than the sum of its proper divisors (9719776004788).

12221110011212 is a wasteful number, since it uses less digits than its factorization.

12221110011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28166 (or 28164 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12221110011212 its reverse (21211001112221), we get a palindrome (33432111123433).

The spelling of 12221110011212 in words is "twelve trillion, two hundred twenty-one billion, one hundred ten million, eleven thousand, two hundred twelve".