331211112120011 has 4 divisors (see below), whose sum is σ = 331350452093832. Its totient is φ = 331071772146192.

The previous prime is 331211112119983. The next prime is 331211112120041. The reversal of 331211112120011 is 110021211112133.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331211112120011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331211112120041) 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, 69669983345 + ... + 69669988098.

It is an arithmetic number, because the mean of its divisors is an integer number (82837613023458).

Almost surely, 2^{331211112120011} is an apocalyptic number.

331211112120011 is a deficient number, since it is larger than the sum of its proper divisors (139339973821).

331211112120011 is a wasteful number, since it uses less digits than its factorization.

331211112120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139339973820.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 331211112120011 its reverse (110021211112133), we get a palindrome (441232323232144).

The spelling of 331211112120011 in words is "three hundred thirty-one trillion, two hundred eleven billion, one hundred twelve million, one hundred twenty thousand, eleven".