221211001012112 has 20 divisors (see below), whose sum is σ = 428597961764976. Its totient is φ = 110605075395360.

The previous prime is 221211001012091. The next prime is 221211001012123. The reversal of 221211001012112 is 211210100112122.

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, 22255214 + ... + 30622157.

Almost surely, 2^{221211001012112} is an apocalyptic number.

It is an amenable number.

221211001012112 is a deficient number, since it is larger than the sum of its proper divisors (207386960752864).

221211001012112 is a wasteful number, since it uses less digits than its factorization.

221211001012112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53138846 (or 53138840 counting only the distinct ones).

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

Adding to 221211001012112 its reverse (211210100112122), we get a palindrome (432421101124234).

The spelling of 221211001012112 in words is "two hundred twenty-one trillion, two hundred eleven billion, one million, twelve thousand, one hundred twelve".