2102251320315 has 24 divisors (see below), whose sum is σ = 3644088711120. Its totient is φ = 1121143343424.

The previous prime is 2102251320311. The next prime is 2102251320317. The reversal of 2102251320315 is 5130231522012.

2102251320315 is a `hidden beast` number, since 2 + 1 + 0 + 2 + 25 + 1 + 320 + 315 = 666.

It is not a de Polignac number, because 2102251320315 - 2² = 2102251320311 is a prime.

It is a super-2 number, since 2×2102251320315² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2102251320311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 298257 + ... + 2072066.

It is an arithmetic number, because the mean of its divisors is an integer number (151837029630).

Almost surely, 2^{2102251320315} is an apocalyptic number.

2102251320315 is a deficient number, since it is larger than the sum of its proper divisors (1541837390805).

2102251320315 is a wasteful number, since it uses less digits than its factorization.

2102251320315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2390043 (or 2390040 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 2102251320315 its reverse (5130231522012), we get a palindrome (7232482842327).

The spelling of 2102251320315 in words is "two trillion, one hundred two billion, two hundred fifty-one million, three hundred twenty thousand, three hundred fifteen".