21922054 has 24 divisors (see below), whose sum is σ = 41310864. Its totient is φ = 8540400.

The previous prime is 21922051. The next prime is 21922063. The reversal of 21922054 is 45022912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21922051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4777 + ... + 8164.

It is an arithmetic number, because the mean of its divisors is an integer number (1721286).

Almost surely, 2^21922054 is an apocalyptic number.

21922054 is a deficient number, since it is larger than the sum of its proper divisors (19388810).

21922054 is a wasteful number, since it uses less digits than its factorization.

21922054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12972 (or 12961 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 21922054 is about 4682.0993154780. The cubic root of 21922054 is about 279.8726206320.

Adding to 21922054 its reverse (45022912), we get a palindrome (66944966).

The spelling of 21922054 in words is "twenty-one million, nine hundred twenty-two thousand, fifty-four".