2111220023 has 4 divisors (see below), whose sum is σ = 2303149128. Its totient is φ = 1919290920.

The previous prime is 2111219983. The next prime is 2111220029. The reversal of 2111220023 is 3200221112.

It is a happy number.

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 2111220023 - 2⁶ = 2111219959 is a prime.

It is a super-2 number, since 2×2111220023² = 8914499971032241058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111220029) 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, 95964536 + ... + 95964557.

It is an arithmetic number, because the mean of its divisors is an integer number (575787282).

Almost surely, 2^2111220023 is an apocalyptic number.

2111220023 is a deficient number, since it is larger than the sum of its proper divisors (191929105).

2111220023 is a wasteful number, since it uses less digits than its factorization.

2111220023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191929104.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2111220023 is about 45948.0143531796. The cubic root of 2111220023 is about 1282.8557704424.

Adding to 2111220023 its reverse (3200221112), we get a palindrome (5311441135).

The spelling of 2111220023 in words is "two billion, one hundred eleven million, two hundred twenty thousand, twenty-three".