221122222120012 has 12 divisors (see below), whose sum is σ = 386992411240960. Its totient is φ = 110552961765456.

The previous prime is 221122222120003. The next prime is 221122222120027. The reversal of 221122222120012 is 210021222221122.

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, 2037262587 + ... + 2037371122.

Almost surely, 2^{221122222120012} is an apocalyptic number.

It is an amenable number.

221122222120012 is a deficient number, since it is larger than the sum of its proper divisors (165870189120948).

221122222120012 is a wasteful number, since it uses less digits than its factorization.

221122222120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4074647280 (or 4074647278 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 221122222120012 its reverse (210021222221122), we get a palindrome (431143444341134).

The spelling of 221122222120012 in words is "two hundred twenty-one trillion, one hundred twenty-two billion, two hundred twenty-two million, one hundred twenty thousand, twelve".