121020102112200 has 192 divisors, whose sum is σ = 391618266582720. Its totient is φ = 30885058944000.

The previous prime is 121020102112181. The next prime is 121020102112201. The reversal of 121020102112200 is 2211201020121.

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 121020102112200.

It is not an unprimeable number, because it can be changed into a prime (121020102112201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 43329046 + ... + 46037445.

It is an arithmetic number, because the mean of its divisors is an integer number (2039678471785).

Almost surely, 2^{121020102112200} is an apocalyptic number.

121020102112200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121020102112200 is an abundant number, since it is smaller than the sum of its proper divisors (270598164470520).

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

121020102112200 is a wasteful number, since it uses less digits than its factorization.

121020102112200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89366608 (or 89366599 counting only the distinct ones).

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

Adding to 121020102112200 its reverse (2211201020121), we get a palindrome (123231303132321).

The spelling of 121020102112200 in words is "one hundred twenty-one trillion, twenty billion, one hundred two million, one hundred twelve thousand, two hundred".