120020002121100 has 72 divisors (see below), whose sum is σ = 365534602968640. Its totient is φ = 30320842639680.

The previous prime is 120020002121087. The next prime is 120020002121111. The reversal of 120020002121100 is 1121200020021.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10528064662 + ... + 10528076061.

Almost surely, 2^{120020002121100} is an apocalyptic number.

120020002121100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120020002121100 is an abundant number, since it is smaller than the sum of its proper divisors (245514600847540).

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

120020002121100 is a wasteful number, since it uses less digits than its factorization.

120020002121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21056140759 (or 21056140752 counting only the distinct ones).

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

Adding to 120020002121100 its reverse (1121200020021), we get a palindrome (121141202141121).

The spelling of 120020002121100 in words is "one hundred twenty trillion, twenty billion, two million, one hundred twenty-one thousand, one hundred".