120001222001100 has 144 divisors (see below), whose sum is σ = 389004453121536. Its totient is φ = 28304956512000.

The previous prime is 120001222001081. The next prime is 120001222001147. The reversal of 120001222001100 is 1100222100021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 491283396 + ... + 491527595.

It is an arithmetic number, because the mean of its divisors is an integer number (2701419813344).

Almost surely, 2^{120001222001100} is an apocalyptic number.

120001222001100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120001222001100 is an abundant number, since it is smaller than the sum of its proper divisors (269003231120436).

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

120001222001100 is a wasteful number, since it uses less digits than its factorization.

120001222001100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982811056 (or 982811049 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 120001222001100 its reverse (1100222100021), we get a palindrome (121101444101121).

The spelling of 120001222001100 in words is "one hundred twenty trillion, one billion, two hundred twenty-two million, one thousand, one hundred".