120120531321 has 16 divisors (see below), whose sum is σ = 184927831424. Its totient is φ = 67932670464.

The previous prime is 120120531301. The next prime is 120120531329. The reversal of 120120531321 is 123135021021.

It is not a de Polignac number, because 120120531321 - 2¹⁰ = 120120530297 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (120120531329) 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, 29482630 + ... + 29486703.

It is an arithmetic number, because the mean of its divisors is an integer number (11557989464).

Almost surely, 2^120120531321 is an apocalyptic number.

It is an amenable number.

120120531321 is a deficient number, since it is larger than the sum of its proper divisors (64807300103).

120120531321 is an equidigital number, since it uses as much as digits as its factorization.

120120531321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58969440.

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 120120531321 its reverse (123135021021), we get a palindrome (243255552342).

The spelling of 120120531321 in words is "one hundred twenty billion, one hundred twenty million, five hundred thirty-one thousand, three hundred twenty-one".