221122012202012 has 24 divisors (see below), whose sum is σ = 388353384785520. Its totient is φ = 110163928138880.

The previous prime is 221122012201997. The next prime is 221122012202023. The reversal of 221122012202012 is 210202210221122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31127039 + ... + 37565097.

It is an arithmetic number, because the mean of its divisors is an integer number (16181391032730).

Almost surely, 2^{221122012202012} is an apocalyptic number.

It is an amenable number.

221122012202012 is a deficient number, since it is larger than the sum of its proper divisors (167231372583508).

221122012202012 is a wasteful number, since it uses less digits than its factorization.

221122012202012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6468901 (or 6468899 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 221122012202012 its reverse (210202210221122), we get a palindrome (431324222423134).

The spelling of 221122012202012 in words is "two hundred twenty-one trillion, one hundred twenty-two billion, twelve million, two hundred two thousand, twelve".