712212091 has 2 divisors, whose sum is σ = 712212092. Its totient is φ = 712212090.

The previous prime is 712212047. The next prime is 712212101. The reversal of 712212091 is 190212217.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 712212091 - 2⁷ = 712211963 is a prime.

It is not a weakly prime, because it can be changed into another prime (712212031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 356106045 + 356106046.

It is an arithmetic number, because the mean of its divisors is an integer number (356106046).

Almost surely, 2^712212091 is an apocalyptic number.

712212091 is a deficient number, since it is larger than the sum of its proper divisors (1).

712212091 is an equidigital number, since it uses as much as digits as its factorization.

712212091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 712212091 is about 26687.3020554720. The cubic root of 712212091 is about 893.0376743831.

The spelling of 712212091 in words is "seven hundred twelve million, two hundred twelve thousand, ninety-one".