22212393 has 16 divisors (see below), whose sum is σ = 33914880. Its totient is φ = 12667536.

The previous prime is 22212391. The next prime is 22212397. The reversal of 22212393 is 39321222.

It is not a de Polignac number, because 22212393 - 2¹ = 22212391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22212391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16728 + ... + 18006.

It is an arithmetic number, because the mean of its divisors is an integer number (2119680).

Almost surely, 2^22212393 is an apocalyptic number.

It is an amenable number.

22212393 is a deficient number, since it is larger than the sum of its proper divisors (11702487).

22212393 is a wasteful number, since it uses less digits than its factorization.

22212393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2116.

The product of its digits is 1296, while the sum is 24.

The square root of 22212393 is about 4713.0025461483. The cubic root of 22212393 is about 281.1027642187.

Subtracting from 22212393 its sum of digits (24), we obtain a square (22212369 = 4713²).

The spelling of 22212393 in words is "twenty-two million, two hundred twelve thousand, three hundred ninety-three".