238421221056 has 84 divisors (see below), whose sum is σ = 691625151672. Its totient is φ = 78516209664.

The previous prime is 238421221007. The next prime is 238421221063. The reversal of 238421221056 is 650122124832.

238421221056 is a `hidden beast` number, since 2 + 3 + 8 + 421 + 221 + 0 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 238421221056.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2445721 + ... + 2541336.

It is an arithmetic number, because the mean of its divisors is an integer number (8233632758).

Almost surely, 2^238421221056 is an apocalyptic number.

It is an amenable number.

238421221056 is an abundant number, since it is smaller than the sum of its proper divisors (453203930616).

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

238421221056 is a wasteful number, since it uses less digits than its factorization.

238421221056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4987158 (or 4987145 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

Adding to 238421221056 its reverse (650122124832), we get a palindrome (888543345888).

The spelling of 238421221056 in words is "two hundred thirty-eight billion, four hundred twenty-one million, two hundred twenty-one thousand, fifty-six".