121100100020200 has 48 divisors (see below), whose sum is σ = 321780265771680. Its totient is φ = 41520034292160.

The previous prime is 121100100020027. The next prime is 121100100020227. The reversal of 121100100020200 is 2020001001121.

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

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, 43250034322 + ... + 43250037121.

It is an arithmetic number, because the mean of its divisors is an integer number (6703755536910).

Almost surely, 2^{121100100020200} is an apocalyptic number.

121100100020200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121100100020200 is an abundant number, since it is smaller than the sum of its proper divisors (200680165751480).

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

121100100020200 is a wasteful number, since it uses less digits than its factorization.

121100100020200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86500071466 (or 86500071457 counting only the distinct ones).

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

Adding to 121100100020200 its reverse (2020001001121), we get a palindrome (123120101021321).

The spelling of 121100100020200 in words is "one hundred twenty-one trillion, one hundred billion, one hundred million, twenty thousand, two hundred".