121012012010120 has 128 divisors (see below), whose sum is σ = 339471134991360. Its totient is φ = 37717044437760.

The previous prime is 121012012010111. The next prime is 121012012010147. The reversal of 121012012010120 is 21010210210121.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 121012012010095 and 121012012010104.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122173907 + ... + 123160413.

It is an arithmetic number, because the mean of its divisors is an integer number (2652118242120).

Almost surely, 2^{121012012010120} is an apocalyptic number.

121012012010120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121012012010120 is an abundant number, since it is smaller than the sum of its proper divisors (218459122981240).

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

121012012010120 is a wasteful number, since it uses less digits than its factorization.

121012012010120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026363 (or 1026359 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121012012010120 its reverse (21010210210121), we get a palindrome (142022222220241).

The spelling of 121012012010120 in words is "one hundred twenty-one trillion, twelve billion, twelve million, ten thousand, one hundred twenty".