22712022 has 16 divisors (see below), whose sum is σ = 50471280. Its totient is φ = 7570656.

The previous prime is 22712021. The next prime is 22712023. The reversal of 22712022 is 22021722.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22712021) and next prime (22712023).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22711986 and 22712004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22712021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210243 + ... + 210350.

It is an arithmetic number, because the mean of its divisors is an integer number (3154455).

Almost surely, 2^22712022 is an apocalyptic number.

22712022 is an abundant number, since it is smaller than the sum of its proper divisors (27759258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22712022 is a wasteful number, since it uses less digits than its factorization.

22712022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420604 (or 420598 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 22712022 is about 4765.7131680369. The cubic root of 22712022 is about 283.1947948627.

Adding to 22712022 its reverse (22021722), we get a palindrome (44733744).

The spelling of 22712022 in words is "twenty-two million, seven hundred twelve thousand, twenty-two".