20112331013111 has 4 divisors (see below), whose sum is σ = 20114484146424. Its totient is φ = 20110177879800.

The previous prime is 20112331013101. The next prime is 20112331013141. The reversal of 20112331013111 is 11131013321102.

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-20112331013111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112331013101) 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, 1076552645 + ... + 1076571326.

It is an arithmetic number, because the mean of its divisors is an integer number (5028621036606).

Almost surely, 2^{20112331013111} is an apocalyptic number.

20112331013111 is a deficient number, since it is larger than the sum of its proper divisors (2153133313).

20112331013111 is an equidigital number, since it uses as much as digits as its factorization.

20112331013111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2153133312.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 20112331013111 its reverse (11131013321102), we get a palindrome (31243344334213).

The spelling of 20112331013111 in words is "twenty trillion, one hundred twelve billion, three hundred thirty-one million, thirteen thousand, one hundred eleven".