2111220122031 has 20 divisors (see below), whose sum is σ = 3339315489312. Its totient is φ = 1324687134528.

The previous prime is 2111220122021. The next prime is 2111220122071. The reversal of 2111220122031 is 1302210221112.

2111220122031 is a `hidden beast` number, since 211 + 1 + 2 + 201 + 220 + 31 = 666.

It is not a de Polignac number, because 2111220122031 - 2⁵ = 2111220121999 is a prime.

It is a super-2 number, since 2×2111220122031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2111220121995 and 2111220122013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111220122021) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 766599975 + ... + 766602728.

Almost surely, 2^{2111220122031} is an apocalyptic number.

2111220122031 is a deficient number, since it is larger than the sum of its proper divisors (1228095367281).

2111220122031 is a wasteful number, since it uses less digits than its factorization.

2111220122031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533202732 (or 1533202723 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2111220122031 its reverse (1302210221112), we get a palindrome (3413430343143).

The spelling of 2111220122031 in words is "two trillion, one hundred eleven billion, two hundred twenty million, one hundred twenty-two thousand, thirty-one".