120012211220020 has 48 divisors (see below), whose sum is σ = 289234450552320. Its totient is φ = 40974880472064.

The previous prime is 120012211220009. The next prime is 120012211220021. The reversal of 120012211220020 is 20022112210021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 120012211219976 and 120012211220003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120012211220021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1793334909 + ... + 1793401828.

It is an arithmetic number, because the mean of its divisors is an integer number (6025717719840).

Almost surely, 2^{120012211220020} is an apocalyptic number.

120012211220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120012211220020 is an abundant number, since it is smaller than the sum of its proper divisors (169222239332300).

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

120012211220020 is a wasteful number, since it uses less digits than its factorization.

120012211220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3586736992 (or 3586736990 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 120012211220020 its reverse (20022112210021), we get a palindrome (140034323430041).

Subtracting from 120012211220020 its reverse (20022112210021), we obtain a palindrome (99990099009999).

The spelling of 120012211220020 in words is "one hundred twenty trillion, twelve billion, two hundred eleven million, two hundred twenty thousand, twenty".