203103331212100 has 72 divisors (see below), whose sum is σ = 480804492168000. Its totient is φ = 73855216809600.

The previous prime is 203103331212073. The next prime is 203103331212127. The reversal of 203103331212100 is 1212133301302.

It is an interprime number because it is at equal distance from previous prime (203103331212073) and next prime (203103331212127).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 169285126 + ... + 170480674.

It is an arithmetic number, because the mean of its divisors is an integer number (6677840169000).

Almost surely, 2^{203103331212100} is an apocalyptic number.

203103331212100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203103331212100 is an abundant number, since it is smaller than the sum of its proper divisors (277701160955900).

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

203103331212100 is a wasteful number, since it uses less digits than its factorization.

203103331212100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350013 (or 1350006 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 203103331212100 its reverse (1212133301302), we get a palindrome (204315464513402).

The spelling of 203103331212100 in words is "two hundred three trillion, one hundred three billion, three hundred thirty-one million, two hundred twelve thousand, one hundred".