121111111030120 has 64 divisors (see below), whose sum is σ = 279155440020240. Its totient is φ = 47261332070400.

The previous prime is 121111111030069. The next prime is 121111111030139. The reversal of 121111111030120 is 21030111111121.

It can be written as a sum of positive squares in 8 ways, for example, as 37387183624036 + 83723927406084 = 6114506^2 + 9150078^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121111111030094 and 121111111030103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49784844 + ... + 52160836.

Almost surely, 2^{121111111030120} is an apocalyptic number.

121111111030120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121111111030120 is an abundant number, since it is smaller than the sum of its proper divisors (158044328990120).

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

121111111030120 is a wasteful number, since it uses less digits than its factorization.

121111111030120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2407126 (or 2407122 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 16.

Adding to 121111111030120 its reverse (21030111111121), we get a palindrome (142141222141241).

The spelling of 121111111030120 in words is "one hundred twenty-one trillion, one hundred eleven billion, one hundred eleven million, thirty thousand, one hundred twenty".