212133199 has 2 divisors, whose sum is σ = 212133200. Its totient is φ = 212133198.

The previous prime is 212133179. The next prime is 212133239. The reversal of 212133199 is 991331212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212133199 - 2²³ = 203744591 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212133199.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212133149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106066599 + 106066600.

It is an arithmetic number, because the mean of its divisors is an integer number (106066600).

Almost surely, 2^212133199 is an apocalyptic number.

212133199 is a deficient number, since it is larger than the sum of its proper divisors (1).

212133199 is an equidigital number, since it uses as much as digits as its factorization.

212133199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2916, while the sum is 31.

The square root of 212133199 is about 14564.7931327568. The cubic root of 212133199 is about 596.3980485503.

The spelling of 212133199 in words is "two hundred twelve million, one hundred thirty-three thousand, one hundred ninety-nine".