22301921 has 4 divisors (see below), whose sum is σ = 22325952. Its totient is φ = 22277892.

The previous prime is 22301897. The next prime is 22301933. The reversal of 22301921 is 12910322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22301921 - 2⁶ = 22301857 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22301893 and 22301902.

It is not an unprimeable number, because it can be changed into a prime (22301971) 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 3 ways as a sum of consecutive naturals, for example, 10565 + ... + 12498.

It is an arithmetic number, because the mean of its divisors is an integer number (5581488).

Almost surely, 2^22301921 is an apocalyptic number.

It is an amenable number.

22301921 is a deficient number, since it is larger than the sum of its proper divisors (24031).

22301921 is an equidigital number, since it uses as much as digits as its factorization.

22301921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24030.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 22301921 is about 4722.4909740517. The cubic root of 22301921 is about 281.4799235240.

The spelling of 22301921 in words is "twenty-two million, three hundred one thousand, nine hundred twenty-one".