2121255052 has 24 divisors (see below), whose sum is σ = 4246452896. Its totient is φ = 908264448.

The previous prime is 2121255047. The next prime is 2121255077. The reversal of 2121255052 is 2505521212.

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, 4053 + ... + 65260.

Almost surely, 2^2121255052 is an apocalyptic number.

It is an amenable number.

2121255052 is an abundant number, since it is smaller than the sum of its proper divisors (2125197844).

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

2121255052 is a wasteful number, since it uses less digits than its factorization.

2121255052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70417 (or 70415 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 2121255052 is about 46057.0847101724. The cubic root of 2121255052 is about 1284.8851107748.

Adding to 2121255052 its reverse (2505521212), we get a palindrome (4626776264).

The spelling of 2121255052 in words is "two billion, one hundred twenty-one million, two hundred fifty-five thousand, fifty-two".