120012021320 has 64 divisors (see below), whose sum is σ = 276487992000. Its totient is φ = 46857662208.

The previous prime is 120012021307. The next prime is 120012021323. The reversal of 120012021320 is 23120210021.

It is a happy number.

It is a super-2 number, since 2×120012021320² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 120012021295 and 120012021304.

It is not an unprimeable number, because it can be changed into a prime (120012021323) 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, 2693786 + ... + 2737974.

It is an arithmetic number, because the mean of its divisors is an integer number (4320124875).

Almost surely, 2^120012021320 is an apocalyptic number.

120012021320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120012021320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138243996000).

120012021320 is an abundant number, since it is smaller than the sum of its proper divisors (156475970680).

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

120012021320 is a wasteful number, since it uses less digits than its factorization.

120012021320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45822 (or 45818 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 120012021320 its reverse (23120210021), we get a palindrome (143132231341).

The spelling of 120012021320 in words is "one hundred twenty billion, twelve million, twenty-one thousand, three hundred twenty".