202104121331 has 4 divisors (see below), whose sum is σ = 230976138672. Its totient is φ = 173232103992.

The previous prime is 202104121327. The next prime is 202104121339. The reversal of 202104121331 is 133121401202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133121401202 = 2 ⋅66560700601.

It is a cyclic number.

It is not a de Polignac number, because 202104121331 - 2² = 202104121327 is a prime.

It is a super-2 number, since 2×202104121331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202104121339) 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, 14436008660 + ... + 14436008673.

It is an arithmetic number, because the mean of its divisors is an integer number (57744034668).

Almost surely, 2^202104121331 is an apocalyptic number.

202104121331 is a deficient number, since it is larger than the sum of its proper divisors (28872017341).

202104121331 is an equidigital number, since it uses as much as digits as its factorization.

202104121331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28872017340.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 202104121331 its reverse (133121401202), we get a palindrome (335225522533).

The spelling of 202104121331 in words is "two hundred two billion, one hundred four million, one hundred twenty-one thousand, three hundred thirty-one".