120020001320 has 16 divisors (see below), whose sum is σ = 270045003060. Its totient is φ = 48008000512.

The previous prime is 120020001313. The next prime is 120020001323. The reversal of 120020001320 is 23100020021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 115313218084 + 4706783236 = 339578^2 + 68606^2 .

It is not an unprimeable number, because it can be changed into a prime (120020001323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1500249977 + ... + 1500250056.

Almost surely, 2^120020001320 is an apocalyptic number.

120020001320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120020001320 is an abundant number, since it is smaller than the sum of its proper divisors (150025001740).

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

120020001320 is a wasteful number, since it uses less digits than its factorization.

120020001320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3000500044 (or 3000500040 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 120020001320 its reverse (23100020021), we get a palindrome (143120021341).

The spelling of 120020001320 in words is "one hundred twenty billion, twenty million, one thousand, three hundred twenty".