202102310302123 has 16 divisors (see below), whose sum is σ = 255732483366144. Its totient is φ = 155131837328160.

The previous prime is 202102310302069. The next prime is 202102310302229. The reversal of 202102310302123 is 321203013201202.

It is not a de Polignac number, because 202102310302123 - 2⁴⁵ = 166917938213291 is a prime.

It is a super-2 number, since 2×202102310302123² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202102310302094 and 202102310302103.

It is not an unprimeable number, because it can be changed into a prime (202102310306123) 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, 19587348040 + ... + 19587358357.

It is an arithmetic number, because the mean of its divisors is an integer number (15983280210384).

Almost surely, 2^{202102310302123} is an apocalyptic number.

202102310302123 is a deficient number, since it is larger than the sum of its proper divisors (53630173064021).

202102310302123 is a wasteful number, since it uses less digits than its factorization.

202102310302123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39174706482.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 202102310302123 its reverse (321203013201202), we get a palindrome (523305323503325).

The spelling of 202102310302123 in words is "two hundred two trillion, one hundred two billion, three hundred ten million, three hundred two thousand, one hundred twenty-three".