121101121012120 has 64 divisors (see below), whose sum is σ = 279051028914240. Its totient is φ = 47285335104000.

The previous prime is 121101121012111. The next prime is 121101121012177. The reversal of 121101121012120 is 21210121101121.

It is a junction number, because it is equal to n+sod(n) for n = 121101121012094 and 121101121012103.

It is a congruent number.

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, 210808407 + ... + 211382086.

It is an arithmetic number, because the mean of its divisors is an integer number (4360172326785).

Almost surely, 2^{121101121012120} is an apocalyptic number.

121101121012120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121101121012120 is an abundant number, since it is smaller than the sum of its proper divisors (157949907902120).

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

121101121012120 is a wasteful number, since it uses less digits than its factorization.

121101121012120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422190676 (or 422190672 counting only the distinct ones).

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

Adding to 121101121012120 its reverse (21210121101121), we get a palindrome (142311242113241).

The spelling of 121101121012120 in words is "one hundred twenty-one trillion, one hundred one billion, one hundred twenty-one million, twelve thousand, one hundred twenty".