121102210210200 has 96 divisors (see below), whose sum is σ = 391739323507200. Its totient is φ = 30889839122560.

The previous prime is 121102210210153. The next prime is 121102210210249. The reversal of 121102210210200 is 2012012201121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121102210210200.

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, 4387747440 + ... + 4387775039.

It is an arithmetic number, because the mean of its divisors is an integer number (4080617953200).

Almost surely, 2^{121102210210200} is an apocalyptic number.

121102210210200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121102210210200 is an abundant number, since it is smaller than the sum of its proper divisors (270637113297000).

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

121102210210200 is a wasteful number, since it uses less digits than its factorization.

121102210210200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8775522521 (or 8775522512 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121102210210200 its reverse (2012012201121), we get a palindrome (123114222411321).

The spelling of 121102210210200 in words is "one hundred twenty-one trillion, one hundred two billion, two hundred ten million, two hundred ten thousand, two hundred".