21022214958 has 40 divisors (see below), whose sum is σ = 49153400208. Its totient is φ = 6702734016.

The previous prime is 21022214957. The next prime is 21022214963. The reversal of 21022214958 is 85941222012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022214951) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2817291 + ... + 2824742.

Almost surely, 2^21022214958 is an apocalyptic number.

21022214958 is an abundant number, since it is smaller than the sum of its proper divisors (28131185250).

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

21022214958 is a wasteful number, since it uses less digits than its factorization.

21022214958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5642070 (or 5642061 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 21022214958 in words is "twenty-one billion, twenty-two million, two hundred fourteen thousand, nine hundred fifty-eight".