121011200112120 has 32 divisors (see below), whose sum is σ = 363033600336720. Its totient is φ = 32269653363200.

The previous prime is 121011200112119. The next prime is 121011200112149. The reversal of 121011200112120 is 21211002110121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121011200112120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504213333681 + ... + 504213333920.

Almost surely, 2^{121011200112120} is an apocalyptic number.

121011200112120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121011200112120 is an abundant number, since it is smaller than the sum of its proper divisors (242022400224600).

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

121011200112120 is a wasteful number, since it uses less digits than its factorization.

121011200112120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008426667615 (or 1008426667611 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121011200112120 its reverse (21211002110121), we get a palindrome (142222202222241).

The spelling of 121011200112120 in words is "one hundred twenty-one trillion, eleven billion, two hundred million, one hundred twelve thousand, one hundred twenty".