812101272234811 has 32 divisors (see below), whose sum is σ = 906582702735360. Its totient is φ = 722396731392000.

The previous prime is 812101272234809. The next prime is 812101272234821. The reversal of 812101272234811 is 118432272101218.

It is a cyclic number.

It is not a de Polignac number, because 812101272234811 - 2¹ = 812101272234809 is a prime.

It is a super-2 number, since 2×812101272234811² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (812101272234821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5100001851 + ... + 5100161083.

It is an arithmetic number, because the mean of its divisors is an integer number (28330709460480).

Almost surely, 2^{812101272234811} is an apocalyptic number.

812101272234811 is a deficient number, since it is larger than the sum of its proper divisors (94481430500549).

812101272234811 is a wasteful number, since it uses less digits than its factorization.

812101272234811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212467.

The product of its (nonzero) digits is 86016, while the sum is 43.

The spelling of 812101272234811 in words is "eight hundred twelve trillion, one hundred one billion, two hundred seventy-two million, two hundred thirty-four thousand, eight hundred eleven".