2121613612 has 6 divisors (see below), whose sum is σ = 3712823828. Its totient is φ = 1060806804.

The previous prime is 2121613609. The next prime is 2121613631. The reversal of 2121613612 is 2163161212.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265201698 + ... + 265201705.

Almost surely, 2^2121613612 is an apocalyptic number.

It is an amenable number.

2121613612 is a deficient number, since it is larger than the sum of its proper divisors (1591210216).

2121613612 is a wasteful number, since it uses less digits than its factorization.

2121613612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530403407 (or 530403405 counting only the distinct ones).

The product of its digits is 864, while the sum is 25.

The square root of 2121613612 is about 46060.9771064401. The cubic root of 2121613612 is about 1284.9575022660.

Adding to 2121613612 its reverse (2163161212), we get a palindrome (4284774824).

The spelling of 2121613612 in words is "two billion, one hundred twenty-one million, six hundred thirteen thousand, six hundred twelve".