2111122564 has 12 divisors (see below), whose sum is σ = 3749606224. Its totient is φ = 1039806504.

The previous prime is 2111122561. The next prime is 2111122567. The reversal of 2111122564 is 4652211112.

It is an interprime number because it is at equal distance from previous prime (2111122561) and next prime (2111122567).

It is not an unprimeable number, because it can be changed into a prime (2111122561) 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, 3938394 + ... + 3938929.

Almost surely, 2^2111122564 is an apocalyptic number.

It is an amenable number.

2111122564 is a deficient number, since it is larger than the sum of its proper divisors (1638483660).

2111122564 is a wasteful number, since it uses less digits than its factorization.

2111122564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7877394 (or 7877392 counting only the distinct ones).

The product of its digits is 960, while the sum is 25.

The square root of 2111122564 is about 45946.9538054483. The cubic root of 2111122564 is about 1282.8360302349.

Adding to 2111122564 its reverse (4652211112), we get a palindrome (6763333676).

The spelling of 2111122564 in words is "two billion, one hundred eleven million, one hundred twenty-two thousand, five hundred sixty-four".