121100102200 has 96 divisors (see below), whose sum is σ = 351033068160. Its totient is φ = 37745481600.

The previous prime is 121100102171. The next prime is 121100102231. The reversal of 121100102200 is 2201001121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

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, 3916422 + ... + 3947221.

It is an arithmetic number, because the mean of its divisors is an integer number (3656594460).

Almost surely, 2^121100102200 is an apocalyptic number.

121100102200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121100102200 is an abundant number, since it is smaller than the sum of its proper divisors (229932965960).

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

121100102200 is a wasteful number, since it uses less digits than its factorization.

121100102200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7863677 (or 7863668 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 121100102200 its reverse (2201001121), we get a palindrome (123301103321).

The spelling of 121100102200 in words is "one hundred twenty-one billion, one hundred million, one hundred two thousand, two hundred".