2121255050 has 24 divisors (see below), whose sum is σ = 3946910700. Its totient is φ = 848206080.

The previous prime is 2121255047. The next prime is 2121255077. The reversal of 2121255050 is 505521212.

It can be written as a sum of positive squares in 6 ways, for example, as 717329089 + 1403925961 = 26783^2 + 37469^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188996 + ... + 199904.

Almost surely, 2^2121255050 is an apocalyptic number.

2121255050 is a deficient number, since it is larger than the sum of its proper divisors (1825655650).

2121255050 is a wasteful number, since it uses less digits than its factorization.

2121255050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14810 (or 14805 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 2121255050 is about 46057.0846884603. The cubic root of 2121255050 is about 1284.8851103710.

Adding to 2121255050 its reverse (505521212), we get a palindrome (2626776262).

The spelling of 2121255050 in words is "two billion, one hundred twenty-one million, two hundred fifty-five thousand, fifty".