121313013442120 has 16 divisors (see below), whose sum is σ = 272954280244860. Its totient is φ = 48525205376832.

The previous prime is 121313013442109. The next prime is 121313013442157. The reversal of 121313013442120 is 21244310313121.

It can be written as a sum of positive squares in 2 ways, for example, as 107815369362724 + 13497644079396 = 10383418^2 + 3673914^2 .

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, 1516412667987 + ... + 1516412668066.

Almost surely, 2^{121313013442120} is an apocalyptic number.

121313013442120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121313013442120 is an abundant number, since it is smaller than the sum of its proper divisors (151641266802740).

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

121313013442120 is a wasteful number, since it uses less digits than its factorization.

121313013442120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3032825336064 (or 3032825336060 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 121313013442120 its reverse (21244310313121), we get a palindrome (142557323755241).

The spelling of 121313013442120 in words is "one hundred twenty-one trillion, three hundred thirteen billion, thirteen million, four hundred forty-two thousand, one hundred twenty".