121203030100 has 36 divisors (see below), whose sum is σ = 264479947200. Its totient is φ = 48210360160.

The previous prime is 121203030079. The next prime is 121203030139. The reversal of 121203030100 is 1030302121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3367660 + ... + 3403459.

It is an arithmetic number, because the mean of its divisors is an integer number (7346665200).

Almost surely, 2^121203030100 is an apocalyptic number.

121203030100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121203030100 is an abundant number, since it is smaller than the sum of its proper divisors (143276917100).

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

121203030100 is a wasteful number, since it uses less digits than its factorization.

121203030100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6771312 (or 6771305 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 121203030100 its reverse (1030302121), we get a palindrome (122233332221).

The spelling of 121203030100 in words is "one hundred twenty-one billion, two hundred three million, thirty thousand, one hundred".