22131197 has 16 divisors (see below), whose sum is σ = 25090560. Its totient is φ = 19345200.

The previous prime is 22131133. The next prime is 22131199. The reversal of 22131197 is 79113122.

It is a cyclic number.

It is not a de Polignac number, because 22131197 - 2⁶ = 22131133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22131199) 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, 33254 + ... + 33912.

It is an arithmetic number, because the mean of its divisors is an integer number (1568160).

Almost surely, 2^22131197 is an apocalyptic number.

It is an amenable number.

22131197 is a deficient number, since it is larger than the sum of its proper divisors (2959363).

22131197 is a wasteful number, since it uses less digits than its factorization.

22131197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784.

The product of its digits is 756, while the sum is 26.

The square root of 22131197 is about 4704.3806181048. The cubic root of 22131197 is about 280.7598282170.

The spelling of 22131197 in words is "twenty-two million, one hundred thirty-one thousand, one hundred ninety-seven".