203306413122 has 18 divisors (see below), whose sum is σ = 440501373273. Its totient is φ = 67768166712.

The previous prime is 203306413111. The next prime is 203306413147. The reversal of 203306413122 is 221314603302.

203306413122 is a `hidden beast` number, since 2 + 0 + 3 + 3 + 0 + 641 + 3 + 12 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 102900449961 + 100405963161 = 320781^2 + 316869^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=318831.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1859848 + ... + 1966124.

Almost surely, 2^203306413122 is an apocalyptic number.

203306413122 is an abundant number, since it is smaller than the sum of its proper divisors (237194960151).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

203306413122 is an frugal number, since it uses more digits than its factorization.

203306413122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212562 (or 106282 counting only the distinct ones).

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

The spelling of 203306413122 in words is "two hundred three billion, three hundred six million, four hundred thirteen thousand, one hundred twenty-two".