121011200120 has 64 divisors (see below), whose sum is σ = 272971728000. Its totient is φ = 48280826880.

The previous prime is 121011200119. The next prime is 121011200143. The reversal of 121011200120 is 21002110121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35084156 + ... + 35087604.

It is an arithmetic number, because the mean of its divisors is an integer number (4265183250).

Almost surely, 2^121011200120 is an apocalyptic number.

121011200120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121011200120 is an abundant number, since it is smaller than the sum of its proper divisors (151960527880).

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

121011200120 is a wasteful number, since it uses less digits than its factorization.

121011200120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5448 (or 5444 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121011200120 its reverse (21002110121), we get a palindrome (142013310241).

The spelling of 121011200120 in words is "one hundred twenty-one billion, eleven million, two hundred thousand, one hundred twenty".