21122058 has 16 divisors (see below), whose sum is σ = 44729280. Its totient is φ = 6626496.

The previous prime is 21122033. The next prime is 21122069. The reversal of 21122058 is 85022112.

It is a happy number.

It is a super-2 number, since 2×21122058² = 892282668310728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103438 + ... + 103641.

It is an arithmetic number, because the mean of its divisors is an integer number (2795580).

Almost surely, 2^21122058 is an apocalyptic number.

21122058 is an abundant number, since it is smaller than the sum of its proper divisors (23607222).

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

21122058 is a wasteful number, since it uses less digits than its factorization.

21122058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207101.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 21122058 is about 4595.8740191611. The cubic root of 21122058 is about 276.4259072239.

The spelling of 21122058 in words is "twenty-one million, one hundred twenty-two thousand, fifty-eight".