120121011021100 has 36 divisors (see below), whose sum is σ = 261102159970344. Its totient is φ = 47967378407680.

The previous prime is 120121011021043. The next prime is 120121011021101. The reversal of 120121011021100 is 1120110121021.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (120121011021101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1012765414 + ... + 1012884013.

It is an arithmetic number, because the mean of its divisors is an integer number (7252837776954).

Almost surely, 2^{120121011021100} is an apocalyptic number.

120121011021100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120121011021100 is an abundant number, since it is smaller than the sum of its proper divisors (140981148949244).

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

120121011021100 is a wasteful number, since it uses less digits than its factorization.

120121011021100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2025650034 (or 2025650027 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 120121011021100 its reverse (1120110121021), we get a palindrome (121241121142121).

The spelling of 120121011021100 in words is "one hundred twenty trillion, one hundred twenty-one billion, eleven million, twenty-one thousand, one hundred".