812133120297 has 4 divisors (see below), whose sum is σ = 1082844160400. Its totient is φ = 541422080196.

The previous prime is 812133120251. The next prime is 812133120307. The reversal of 812133120297 is 792021331218.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 812133120297 - 2²⁶ = 812066011433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (812133120697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135355520047 + ... + 135355520052.

It is an arithmetic number, because the mean of its divisors is an integer number (270711040100).

Almost surely, 2^812133120297 is an apocalyptic number.

It is an amenable number.

812133120297 is a deficient number, since it is larger than the sum of its proper divisors (270711040103).

812133120297 is a wasteful number, since it uses less digits than its factorization.

812133120297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270711040102.

The product of its (nonzero) digits is 36288, while the sum is 39.

The spelling of 812133120297 in words is "eight hundred twelve billion, one hundred thirty-three million, one hundred twenty thousand, two hundred ninety-seven".