22107921 has 8 divisors (see below), whose sum is σ = 32157024. Its totient is φ = 13398720.

The previous prime is 22107901. The next prime is 22107941. The reversal of 22107921 is 12970122.

It is an interprime number because it is at equal distance from previous prime (22107901) and next prime (22107941).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22107921 - 2⁶ = 22107857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22107891 and 22107900.

It is not an unprimeable number, because it can be changed into a prime (22107901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334936 + ... + 335001.

It is an arithmetic number, because the mean of its divisors is an integer number (4019628).

Almost surely, 2^22107921 is an apocalyptic number.

It is an amenable number.

22107921 is a deficient number, since it is larger than the sum of its proper divisors (10049103).

22107921 is a wasteful number, since it uses less digits than its factorization.

22107921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669951.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 22107921 is about 4701.9061028481. The cubic root of 22107921 is about 280.6613660310.

The spelling of 22107921 in words is "twenty-two million, one hundred seven thousand, nine hundred twenty-one".