2111220112331 has 16 divisors (see below), whose sum is σ = 2403433347840. Its totient is φ = 1835731122720.

The previous prime is 2111220112319. The next prime is 2111220112357. The reversal of 2111220112331 is 1332110221112.

It is a de Polignac number, because none of the positive numbers 2^k-2111220112331 is a prime.

It is a super-2 number, since 2×2111220112331² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2111220102331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4024265 + ... + 4518533.

It is an arithmetic number, because the mean of its divisors is an integer number (150214584240).

Almost surely, 2^{2111220112331} is an apocalyptic number.

2111220112331 is a deficient number, since it is larger than the sum of its proper divisors (292213235509).

2111220112331 is a wasteful number, since it uses less digits than its factorization.

2111220112331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511186.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 2111220112331 its reverse (1332110221112), we get a palindrome (3443330333443).

The spelling of 2111220112331 in words is "two trillion, one hundred eleven billion, two hundred twenty million, one hundred twelve thousand, three hundred thirty-one".