2121611152 has 20 divisors (see below), whose sum is σ = 4352423436. Its totient is φ = 998405120.

The previous prime is 2121611143. The next prime is 2121611153. The reversal of 2121611152 is 2511161212.

It can be written as a sum of positive squares in 2 ways, for example, as 1062499216 + 1059111936 = 32596^2 + 32544^2 .

It is not an unprimeable number, because it can be changed into a prime (2121611153) 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, 3899749 + ... + 3900292.

Almost surely, 2^2121611152 is an apocalyptic number.

It is an amenable number.

2121611152 is an abundant number, since it is smaller than the sum of its proper divisors (2230812284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121611152 is a wasteful number, since it uses less digits than its factorization.

2121611152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7800066 (or 7800060 counting only the distinct ones).

The product of its digits is 240, while the sum is 22.

The square root of 2121611152 is about 46060.9504027001. The cubic root of 2121611152 is about 1284.9570056320.

Adding to 2121611152 its reverse (2511161212), we get a palindrome (4632772364).

The spelling of 2121611152 in words is "two billion, one hundred twenty-one million, six hundred eleven thousand, one hundred fifty-two".