221534407514120 has 16 divisors (see below), whose sum is σ = 498452416906860. Its totient is φ = 88613763005632.

The previous prime is 221534407514093. The next prime is 221534407514143. The reversal of 221534407514120 is 21415704435122.

It can be written as a sum of positive squares in 2 ways, for example, as 221078180215204 + 456227298916 = 14868698^2 + 675446^2 .

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, 2769180093887 + ... + 2769180093966.

Almost surely, 2^{221534407514120} is an apocalyptic number.

221534407514120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221534407514120 is an abundant number, since it is smaller than the sum of its proper divisors (276918009392740).

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

221534407514120 is a wasteful number, since it uses less digits than its factorization.

221534407514120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5538360187864 (or 5538360187860 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 41.

The spelling of 221534407514120 in words is "two hundred twenty-one trillion, five hundred thirty-four billion, four hundred seven million, five hundred fourteen thousand, one hundred twenty".