212422131 has 24 divisors (see below), whose sum is σ = 312305760. Its totient is φ = 139104000.

The previous prime is 212422127. The next prime is 212422151. The reversal of 212422131 is 131224212.

It is a happy number.

212422131 is a `hidden beast` number, since 212 + 422 + 1 + 31 = 666.

It is not a de Polignac number, because 212422131 - 2² = 212422127 is a prime.

It is a super-2 number, since 2×212422131² = 90246323477162322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212422151) 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, 255825 + ... + 256653.

It is an arithmetic number, because the mean of its divisors is an integer number (13012740).

Almost surely, 2^212422131 is an apocalyptic number.

212422131 is a deficient number, since it is larger than the sum of its proper divisors (99883629).

212422131 is a wasteful number, since it uses less digits than its factorization.

212422131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307 (or 1304 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 212422131 is about 14574.7086077218. The cubic root of 212422131 is about 596.6686965936.

Adding to 212422131 its reverse (131224212), we get a palindrome (343646343).

The spelling of 212422131 in words is "two hundred twelve million, four hundred twenty-two thousand, one hundred thirty-one".