203112001100 has 18 divisors (see below), whose sum is σ = 440753042604. Its totient is φ = 81244800400.

The previous prime is 203112001063. The next prime is 203112001111. The reversal of 203112001100 is 1100211302.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1015559906 + ... + 1015560105.

Almost surely, 2^203112001100 is an apocalyptic number.

203112001100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203112001100 is an abundant number, since it is smaller than the sum of its proper divisors (237641041504).

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

203112001100 is a wasteful number, since it uses less digits than its factorization.

203112001100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031120025 (or 2031120018 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 203112001100 its reverse (1100211302), we get a palindrome (204212212402).

The spelling of 203112001100 in words is "two hundred three billion, one hundred twelve million, one thousand, one hundred".