121112200121120 has 96 divisors (see below), whose sum is σ = 308194047367920. Its totient is φ = 44710127861760.

The previous prime is 121112200121009. The next prime is 121112200121137. The reversal of 121112200121120 is 21121002211121.

It can be written as a sum of positive squares in 8 ways, for example, as 76806083432464 + 44306116688656 = 8763908^2 + 6656284^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5966516 + ... + 16668044.

Almost surely, 2^{121112200121120} is an apocalyptic number.

121112200121120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121112200121120 is an abundant number, since it is smaller than the sum of its proper divisors (187081847246800).

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

121112200121120 is a wasteful number, since it uses less digits than its factorization.

121112200121120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10706998 (or 10706990 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121112200121120 its reverse (21121002211121), we get a palindrome (142233202332241).

The spelling of 121112200121120 in words is "one hundred twenty-one trillion, one hundred twelve billion, two hundred million, one hundred twenty-one thousand, one hundred twenty".