120121100320 has 48 divisors (see below), whose sum is σ = 305615804760. Its totient is φ = 44352405504.

The previous prime is 120121100317. The next prime is 120121100339. The reversal of 120121100320 is 23001121021.

It can be written as a sum of positive squares in 4 ways, for example, as 65010720784 + 55110379536 = 254972^2 + 234756^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 120121100320.

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, 28873185 + ... + 28877344.

Almost surely, 2^120121100320 is an apocalyptic number.

120121100320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120121100320 is an abundant number, since it is smaller than the sum of its proper divisors (185494704440).

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

120121100320 is a wasteful number, since it uses less digits than its factorization.

120121100320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57750557 (or 57750549 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 120121100320 its reverse (23001121021), we get a palindrome (143122221341).

The spelling of 120121100320 in words is "one hundred twenty billion, one hundred twenty-one million, one hundred thousand, three hundred twenty".