21167022 has 16 divisors (see below), whose sum is σ = 42395472. Its totient is φ = 7045440.

The previous prime is 21167021. The next prime is 21167053. The reversal of 21167022 is 22076112.

It is a self number, because there is not a number n which added to its sum of digits gives 21167022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21167021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2778 + ... + 7074.

It is an arithmetic number, because the mean of its divisors is an integer number (2649717).

Almost surely, 2^21167022 is an apocalyptic number.

21167022 is an abundant number, since it is smaller than the sum of its proper divisors (21228450).

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

21167022 is a wasteful number, since it uses less digits than its factorization.

21167022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5123.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 21167022 is about 4600.7631975576. The cubic root of 21167022 is about 276.6219172475.

The spelling of 21167022 in words is "twenty-one million, one hundred sixty-seven thousand, twenty-two".