22020973 has 4 divisors (see below), whose sum is σ = 23714908. Its totient is φ = 20327040.

The previous prime is 22020953. The next prime is 22020991. The reversal of 22020973 is 37902022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12299049 + 9721924 = 3507^2 + 3118^2 .

It is a cyclic number.

It is not a de Polignac number, because 22020973 - 2⁵ = 22020941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22020923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 846948 + ... + 846973.

It is an arithmetic number, because the mean of its divisors is an integer number (5928727).

Almost surely, 2^22020973 is an apocalyptic number.

It is an amenable number.

22020973 is a deficient number, since it is larger than the sum of its proper divisors (1693935).

22020973 is a wasteful number, since it uses less digits than its factorization.

22020973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693934.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 22020973 is about 4692.6509565490. The cubic root of 22020973 is about 280.2929459537.

Adding to 22020973 its reverse (37902022), we get a palindrome (59922995).

The spelling of 22020973 in words is "twenty-two million, twenty thousand, nine hundred seventy-three".