2101111252 has 12 divisors (see below), whose sum is σ = 3695423200. Its totient is φ = 1045276056.

The previous prime is 2101111237. The next prime is 2101111253. The reversal of 2101111252 is 2521111012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101111253) 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, 1318998 + ... + 1320589.

Almost surely, 2^2101111252 is an apocalyptic number.

It is an amenable number.

2101111252 is a deficient number, since it is larger than the sum of its proper divisors (1594311948).

2101111252 is a wasteful number, since it uses less digits than its factorization.

2101111252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2639790 (or 2639788 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 2101111252 is about 45837.8800993240. The cubic root of 2101111252 is about 1280.8050054989.

Adding to 2101111252 its reverse (2521111012), we get a palindrome (4622222264).

The spelling of 2101111252 in words is "two billion, one hundred one million, one hundred eleven thousand, two hundred fifty-two".