221647061420032 has 48 divisors (see below), whose sum is σ = 443408276149020. Its totient is φ = 110767922282496.

The previous prime is 221647061420027. The next prime is 221647061420051. The reversal of 221647061420032 is 230024160746122.

It can be written as a sum of positive squares in 2 ways, for example, as 216826331800576 + 4820729619456 = 14725024^2 + 2195616^2 .

It is a super-2 number, since 2×221647061420032² (a number of 29 digits) contains 22 as substring.

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, 23069893 + ... + 31233220.

Almost surely, 2^{221647061420032} is an apocalyptic number.

It is an amenable number.

221647061420032 is an abundant number, since it is smaller than the sum of its proper divisors (221761214728988).

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

221647061420032 is an equidigital number, since it uses as much as digits as its factorization.

221647061420032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54305128 (or 54305108 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 40.

The spelling of 221647061420032 in words is "two hundred twenty-one trillion, six hundred forty-seven billion, sixty-one million, four hundred twenty thousand, thirty-two".