312122100011 has 4 divisors (see below), whose sum is σ = 312525880992. Its totient is φ = 311718319032.

The previous prime is 312122099987. The next prime is 312122100023. The reversal of 312122100011 is 110001221213.

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 312122100011 - 2¹⁰ = 312122098987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312122100041) 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, 201889331 + ... + 201890876.

It is an arithmetic number, because the mean of its divisors is an integer number (78131470248).

Almost surely, 2^312122100011 is an apocalyptic number.

312122100011 is a deficient number, since it is larger than the sum of its proper divisors (403780981).

312122100011 is an equidigital number, since it uses as much as digits as its factorization.

312122100011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403780980.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 312122100011 its reverse (110001221213), we get a palindrome (422123321224).

The spelling of 312122100011 in words is "three hundred twelve billion, one hundred twenty-two million, one hundred thousand, eleven".