2121255304 has 32 divisors (see below), whose sum is σ = 4784788800. Its totient is φ = 861261120.

The previous prime is 2121255289. The next prime is 2121255347. The reversal of 2121255304 is 4035521212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 995767 + ... + 997894.

It is an arithmetic number, because the mean of its divisors is an integer number (149524650).

Almost surely, 2^2121255304 is an apocalyptic number.

It is an amenable number.

2121255304 is an abundant number, since it is smaller than the sum of its proper divisors (2663533496).

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

2121255304 is a wasteful number, since it uses less digits than its factorization.

2121255304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1993693 (or 1993689 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 2121255304 is about 46057.0874459078. The cubic root of 2121255304 is about 1284.8851616552.

Adding to 2121255304 its reverse (4035521212), we get a palindrome (6156776516).

The spelling of 2121255304 in words is "two billion, one hundred twenty-one million, two hundred fifty-five thousand, three hundred four".