120123321220 has 48 divisors (see below), whose sum is σ = 289744761600. Its totient is φ = 40978168704.

The previous prime is 120123321209. The next prime is 120123321247. The reversal of 120123321220 is 22123321021.

It is a super-2 number, since 2×120123321220² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2127979 + ... + 2183698.

It is an arithmetic number, because the mean of its divisors is an integer number (6036349200).

Almost surely, 2^120123321220 is an apocalyptic number.

120123321220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120123321220 is an abundant number, since it is smaller than the sum of its proper divisors (169621440380).

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

120123321220 is a wasteful number, since it uses less digits than its factorization.

120123321220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4311892 (or 4311890 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 120123321220 its reverse (22123321021), we get a palindrome (142246642241).

The spelling of 120123321220 in words is "one hundred twenty billion, one hundred twenty-three million, three hundred twenty-one thousand, two hundred twenty".