120020100121100 has 18 divisors (see below), whose sum is σ = 260443617263004. Its totient is φ = 48008040048400.

The previous prime is 120020100121093. The next prime is 120020100121127. The reversal of 120020100121100 is 1121001020021.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 600100500506 + ... + 600100500705.

Almost surely, 2^{120020100121100} is an apocalyptic number.

120020100121100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120020100121100 is an abundant number, since it is smaller than the sum of its proper divisors (140423517141904).

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

120020100121100 is a wasteful number, since it uses less digits than its factorization.

120020100121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1200201001225 (or 1200201001218 counting only the distinct ones).

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

Adding to 120020100121100 its reverse (1121001020021), we get a palindrome (121141101141121).

The spelling of 120020100121100 in words is "one hundred twenty trillion, twenty billion, one hundred million, one hundred twenty-one thousand, one hundred".