22012270 has 48 divisors (see below), whose sum is σ = 46539360. Its totient is φ = 7473984.

The previous prime is 22012267. The next prime is 22012271. The reversal of 22012270 is 7221022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81696 + ... + 81964.

It is an arithmetic number, because the mean of its divisors is an integer number (969570).

Almost surely, 2^22012270 is an apocalyptic number.

22012270 is an abundant number, since it is smaller than the sum of its proper divisors (24527090).

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

22012270 is a wasteful number, since it uses less digits than its factorization.

22012270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457 (or 450 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 22012270 is about 4691.7235638942. The cubic root of 22012270 is about 280.2560158425.

Adding to 22012270 its reverse (7221022), we get a palindrome (29233292).

The spelling of 22012270 in words is "twenty-two million, twelve thousand, two hundred seventy".