120120021111020 has 96 divisors (see below), whose sum is σ = 289122479751168. Its totient is φ = 41064863922432.

The previous prime is 120120021110981. The next prime is 120120021111023. The reversal of 120120021111020 is 20111120021021.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 120120021110986 and 120120021111004.

It is not an unprimeable number, because it can be changed into a prime (120120021111023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 190411439 + ... + 191041241.

It is an arithmetic number, because the mean of its divisors is an integer number (3011692497408).

Almost surely, 2^{120120021111020} is an apocalyptic number.

120120021111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120120021111020 is an abundant number, since it is smaller than the sum of its proper divisors (169002458640148).

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

120120021111020 is a wasteful number, since it uses less digits than its factorization.

120120021111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633759 (or 633757 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 120120021111020 its reverse (20111120021021), we get a palindrome (140231141132041).

The spelling of 120120021111020 in words is "one hundred twenty trillion, one hundred twenty billion, twenty-one million, one hundred eleven thousand, twenty".