221121012202112 has 64 divisors (see below), whose sum is σ = 497132369805600. Its totient is φ = 97043704396800.

The previous prime is 221121012202109. The next prime is 221121012202117. The reversal of 221121012202112 is 211202210121122.

221121012202112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (221121012202117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2707651814 + ... + 2707733477.

Almost surely, 2^{221121012202112} is an apocalyptic number.

221121012202112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221121012202112 is an abundant number, since it is smaller than the sum of its proper divisors (276011357603488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221121012202112 is a wasteful number, since it uses less digits than its factorization.

221121012202112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5415385345 (or 5415385333 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 221121012202112 its reverse (211202210121122), we get a palindrome (432323222323234).

The spelling of 221121012202112 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, twelve million, two hundred two thousand, one hundred twelve".