203402331302121 has 12 divisors (see below), whose sum is σ = 335775277070272. Its totient is φ = 116229903601176.

The previous prime is 203402331302111. The next prime is 203402331302201. The reversal of 203402331302121 is 121203133204302.

203402331302121 is a `hidden beast` number, since 2 + 0 + 3 + 4 + 0 + 2 + 331 + 302 + 1 + 21 = 666.

It is not a de Polignac number, because 203402331302121 - 2¹⁵ = 203402331269353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203402331302111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1614304216621 + ... + 1614304216746.

Almost surely, 2^{203402331302121} is an apocalyptic number.

203402331302121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

203402331302121 is a deficient number, since it is larger than the sum of its proper divisors (132372945768151).

203402331302121 is a wasteful number, since it uses less digits than its factorization.

203402331302121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3228608433380 (or 3228608433377 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 203402331302121 its reverse (121203133204302), we get a palindrome (324605464506423).

The spelling of 203402331302121 in words is "two hundred three trillion, four hundred two billion, three hundred thirty-one million, three hundred two thousand, one hundred twenty-one".