212532091 has 2 divisors, whose sum is σ = 212532092. Its totient is φ = 212532090.

The previous prime is 212532077. The next prime is 212532137. The reversal of 212532091 is 190235212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212532091 - 2⁵ = 212532059 is a prime.

It is not a weakly prime, because it can be changed into another prime (212532031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106266045 + 106266046.

It is an arithmetic number, because the mean of its divisors is an integer number (106266046).

Almost surely, 2^212532091 is an apocalyptic number.

212532091 is a deficient number, since it is larger than the sum of its proper divisors (1).

212532091 is an equidigital number, since it uses as much as digits as its factorization.

212532091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 212532091 is about 14578.4804077791. The cubic root of 212532091 is about 596.7716337215.

The spelling of 212532091 in words is "two hundred twelve million, five hundred thirty-two thousand, ninety-one".