22220973 has 10 divisors (see below), whose sum is σ = 33194414. Its totient is φ = 14813928.

The previous prime is 22220971. The next prime is 22220983. The reversal of 22220973 is 37902222.

It can be written as a sum of positive squares in only one way, i.e., 22071204 + 149769 = 4698^2 + 387^2 .

It is not a de Polignac number, because 22220973 - 2¹ = 22220971 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220971) 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 9 ways as a sum of consecutive naturals, for example, 137086 + ... + 137247.

Almost surely, 2^22220973 is an apocalyptic number.

It is an amenable number.

22220973 is a deficient number, since it is larger than the sum of its proper divisors (10973441).

22220973 is an equidigital number, since it uses as much as digits as its factorization.

22220973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274345 (or 274336 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 22220973 is about 4713.9127060225. The cubic root of 22220973 is about 281.1389534944.

The spelling of 22220973 in words is "twenty-two million, two hundred twenty thousand, nine hundred seventy-three".