2155122251253 has 16 divisors (see below), whose sum is σ = 3192833036800. Its totient is φ = 1436721468480.

The previous prime is 2155122251239. The next prime is 2155122251273. The reversal of 2155122251253 is 3521522215512.

2155122251253 is a `hidden beast` number, since 2 + 1 + 551 + 2 + 2 + 2 + 51 + 2 + 53 = 666.

It is not a de Polignac number, because 2155122251253 - 2⁵ = 2155122251221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155122251273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 796188 + ... + 2223546.

It is an arithmetic number, because the mean of its divisors is an integer number (199552064800).

Almost surely, 2^{2155122251253} is an apocalyptic number.

It is an amenable number.

2155122251253 is a deficient number, since it is larger than the sum of its proper divisors (1037710785547).

2155122251253 is a wasteful number, since it uses less digits than its factorization.

2155122251253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1483289 (or 1483283 counting only the distinct ones).

The product of its digits is 60000, while the sum is 36.

Adding to 2155122251253 its reverse (3521522215512), we get a palindrome (5676644466765).

The spelling of 2155122251253 in words is "two trillion, one hundred fifty-five billion, one hundred twenty-two million, two hundred fifty-one thousand, two hundred fifty-three".