202130002323121 has 4 divisors (see below), whose sum is σ = 205443608918644. Its totient is φ = 198816395727600.

The previous prime is 202130002323091. The next prime is 202130002323191. The reversal of 202130002323121 is 121323200031202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63475256042496 + 138654746280625 = 7967136^2 + 11775175^2 .

It is a cyclic number.

It is not a de Polignac number, because 202130002323121 - 2⁵ = 202130002323089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202130002323092 and 202130002323101.

It is not an unprimeable number, because it can be changed into a prime (202130002323191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1656803297670 + ... + 1656803297791.

It is an arithmetic number, because the mean of its divisors is an integer number (51360902229661).

Almost surely, 2^{202130002323121} is an apocalyptic number.

It is an amenable number.

202130002323121 is a deficient number, since it is larger than the sum of its proper divisors (3313606595523).

202130002323121 is an equidigital number, since it uses as much as digits as its factorization.

202130002323121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3313606595522.

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

Adding to 202130002323121 its reverse (121323200031202), we get a palindrome (323453202354323).

The spelling of 202130002323121 in words is "two hundred two trillion, one hundred thirty billion, two million, three hundred twenty-three thousand, one hundred twenty-one".