121200222202110 has 48 divisors (see below), whose sum is σ = 319823869946256. Its totient is φ = 31837670308224.

The previous prime is 121200222202093. The next prime is 121200222202229. The reversal of 121200222202110 is 11202222002121.

It is a happy number.

121200222202110 is a `hidden beast` number, since 1 + 212 + 0 + 0 + 22 + 220 + 211 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 10049763639 + ... + 10049775698.

It is an arithmetic number, because the mean of its divisors is an integer number (6662997290547).

Almost surely, 2^{121200222202110} is an apocalyptic number.

121200222202110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121200222202110 is an abundant number, since it is smaller than the sum of its proper divisors (198623647744146).

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

121200222202110 is a wasteful number, since it uses less digits than its factorization.

121200222202110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20099539417 (or 20099539414 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121200222202110 its reverse (11202222002121), we get a palindrome (132402444204231).

The spelling of 121200222202110 in words is "one hundred twenty-one trillion, two hundred billion, two hundred twenty-two million, two hundred two thousand, one hundred ten".