121200110120 has 16 divisors (see below), whose sum is σ = 272700247860. Its totient is φ = 48480044032.

The previous prime is 121200110117. The next prime is 121200110219. The reversal of 121200110120 is 21011002121.

It can be written as a sum of positive squares in 2 ways, for example, as 119711848036 + 1488262084 = 345994^2 + 38578^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1515001337 + ... + 1515001416.

Almost surely, 2^121200110120 is an apocalyptic number.

121200110120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121200110120 is an abundant number, since it is smaller than the sum of its proper divisors (151500137740).

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

121200110120 is a wasteful number, since it uses less digits than its factorization.

121200110120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3030002764 (or 3030002760 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121200110120 its reverse (21011002121), we get a palindrome (142211112241).

The spelling of 121200110120 in words is "one hundred twenty-one billion, two hundred million, one hundred ten thousand, one hundred twenty".