2130121253 has 8 divisors (see below), whose sum is σ = 2373079800. Its totient is φ = 1898463168.

The previous prime is 2130121249. The next prime is 2130121297. The reversal of 2130121253 is 3521210312.

It can be written as a sum of positive squares in 4 ways, for example, as 17156164 + 2112965089 = 4142^2 + 45967^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2130121253 - 2² = 2130121249 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130121753) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2824718 + ... + 2825471.

It is an arithmetic number, because the mean of its divisors is an integer number (296634975).

Almost surely, 2^2130121253 is an apocalyptic number.

It is an amenable number.

2130121253 is a deficient number, since it is larger than the sum of its proper divisors (242958547).

2130121253 is a wasteful number, since it uses less digits than its factorization.

2130121253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5650231.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 2130121253 is about 46153.2366470652. The cubic root of 2130121253 is about 1286.6727654667.

Adding to 2130121253 its reverse (3521210312), we get a palindrome (5651331565).

The spelling of 2130121253 in words is "two billion, one hundred thirty million, one hundred twenty-one thousand, two hundred fifty-three".