120121220120 has 64 divisors (see below), whose sum is σ = 310361068800. Its totient is φ = 41381470080.

The previous prime is 120121220071. The next prime is 120121220123. The reversal of 120121220120 is 21022121021.

It is a junction number, because it is equal to n+sod(n) for n = 120121220095 and 120121220104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120121220123) 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, 7175924 + ... + 7192643.

It is an arithmetic number, because the mean of its divisors is an integer number (4849391700).

Almost surely, 2^120121220120 is an apocalyptic number.

120121220120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120121220120 is an abundant number, since it is smaller than the sum of its proper divisors (190239848680).

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

120121220120 is a wasteful number, since it uses less digits than its factorization.

120121220120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14368608 (or 14368604 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 120121220120 its reverse (21022121021), we get a palindrome (141143341141).

Subtracting from 120121220120 its reverse (21022121021), we obtain a palindrome (99099099099).

The spelling of 120121220120 in words is "one hundred twenty billion, one hundred twenty-one million, two hundred twenty thousand, one hundred twenty".