212133299999 has 4 divisors (see below), whose sum is σ = 215728779720. Its totient is φ = 208537820280.

The previous prime is 212133299981. The next prime is 212133300023. The reversal of 212133299999 is 999992331212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212133299999 - 2²⁸ = 211864864543 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (59), and also a Moran number because the ratio is a prime number: 3595479661 = 212133299999 / (2 + 1 + 2 + 1 + 3 + 3 + 2 + 9 + 9 + 9 + 9 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212133299969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1797739772 + ... + 1797739889.

It is an arithmetic number, because the mean of its divisors is an integer number (53932194930).

Almost surely, 2^212133299999 is an apocalyptic number.

212133299999 is a deficient number, since it is larger than the sum of its proper divisors (3595479721).

212133299999 is an equidigital number, since it uses as much as digits as its factorization.

212133299999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3595479720.

The product of its digits is 4251528, while the sum is 59.

The spelling of 212133299999 in words is "two hundred twelve billion, one hundred thirty-three million, two hundred ninety-nine thousand, nine hundred ninety-nine".