212972579 has 2 divisors, whose sum is σ = 212972580. Its totient is φ = 212972578.

The previous prime is 212972567. The next prime is 212972581. The reversal of 212972579 is 975279212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212972579 - 2⁸ = 212972323 is a prime.

It is a super-2 number, since 2×212972579² = 90714638811822482, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 212972581, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212972779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106486289 + 106486290.

It is an arithmetic number, because the mean of its divisors is an integer number (106486290).

Almost surely, 2^212972579 is an apocalyptic number.

212972579 is a deficient number, since it is larger than the sum of its proper divisors (1).

212972579 is an equidigital number, since it uses as much as digits as its factorization.

212972579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 44.

The square root of 212972579 is about 14593.5800611091. The cubic root of 212972579 is about 597.1836332221.

The spelling of 212972579 in words is "two hundred twelve million, nine hundred seventy-two thousand, five hundred seventy-nine".