212899307 has 2 divisors, whose sum is σ = 212899308. Its totient is φ = 212899306.

The previous prime is 212899283. The next prime is 212899327. The reversal of 212899307 is 703998212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212899307 - 2⁸ = 212899051 is a prime.

It is a super-2 number, since 2×212899307² = 90652229842160498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212899327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106449653 + 106449654.

It is an arithmetic number, because the mean of its divisors is an integer number (106449654).

Almost surely, 2^212899307 is an apocalyptic number.

212899307 is a deficient number, since it is larger than the sum of its proper divisors (1).

212899307 is an equidigital number, since it uses as much as digits as its factorization.

212899307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 212899307 is about 14591.0694261935. The cubic root of 212899307 is about 597.1151394933.

The spelling of 212899307 in words is "two hundred twelve million, eight hundred ninety-nine thousand, three hundred seven".