838106056221 has 72 divisors (see below), whose sum is σ = 1354842127296. Its totient is φ = 459403176960.

The previous prime is 838106056169. The next prime is 838106056261. The reversal of 838106056221 is 122650601838.

It is not a de Polignac number, because 838106056221 - 2²⁷ = 837971838493 is a prime.

It is a super-2 number, since 2×838106056221² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (838106056261) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 14258925 + ... + 14317581.

It is an arithmetic number, because the mean of its divisors is an integer number (18817251768).

Almost surely, 2^838106056221 is an apocalyptic number.

It is an amenable number.

838106056221 is a deficient number, since it is larger than the sum of its proper divisors (516736071075).

838106056221 is a wasteful number, since it uses less digits than its factorization.

838106056221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58819 (or 58775 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 838106056221 in words is "eight hundred thirty-eight billion, one hundred six million, fifty-six thousand, two hundred twenty-one".