22203012 has 24 divisors (see below), whose sum is σ = 55792576. Its totient is φ = 6831648.

The previous prime is 22203011. The next prime is 22203043. The reversal of 22203012 is 21030222.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (22203011) 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, 71008 + ... + 71319.

Almost surely, 2^22203012 is an apocalyptic number.

It is an amenable number.

22203012 is an abundant number, since it is smaller than the sum of its proper divisors (33589564).

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

22203012 is a wasteful number, since it uses less digits than its factorization.

22203012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142347 (or 142345 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 22203012 is about 4712.0072156142. The cubic root of 22203012 is about 281.0631857673.

Adding to 22203012 its reverse (21030222), we get a palindrome (43233234).

The spelling of 22203012 in words is "twenty-two million, two hundred three thousand, twelve".