120201212221220 has 24 divisors (see below), whose sum is σ = 271839664562424. Its totient is φ = 44381986050816.

The previous prime is 120201212221213. The next prime is 120201212221249. The reversal of 120201212221220 is 22122212102021.

It can be written as a sum of positive squares in 4 ways, for example, as 4170915767524 + 116030296453696 = 2042282^2 + 10771736^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 120201212221192 and 120201212221201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231156177089 + ... + 231156177608.

It is an arithmetic number, because the mean of its divisors is an integer number (11326652690101).

Almost surely, 2^{120201212221220} is an apocalyptic number.

120201212221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120201212221220 is an abundant number, since it is smaller than the sum of its proper divisors (151638452341204).

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

120201212221220 is a wasteful number, since it uses less digits than its factorization.

120201212221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462312354719 (or 462312354717 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 120201212221220 its reverse (22122212102021), we get a palindrome (142323424323241).

The spelling of 120201212221220 in words is "one hundred twenty trillion, two hundred one billion, two hundred twelve million, two hundred twenty-one thousand, two hundred twenty".