120001220000 has 60 divisors (see below), whose sum is σ = 295221050586. Its totient is φ = 48000480000.

The previous prime is 120001219853. The next prime is 120001220011. The reversal of 120001220000 is 22100021.

It can be written as a sum of positive squares in 5 ways, for example, as 7124035216 + 112877184784 = 84404^2 + 335972^2 .

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a self number, because there is not a number n which added to its sum of digits gives 120001220000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2980031 + ... + 3020030.

Almost surely, 2^120001220000 is an apocalyptic number.

120001220000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120001220000 is an abundant number, since it is smaller than the sum of its proper divisors (175219830586).

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

120001220000 is an frugal number, since it uses more digits than its factorization.

120001220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6000091 (or 6000068 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 120001220000 its reverse (22100021), we get a palindrome (120023320021).

The spelling of 120001220000 in words is "one hundred twenty billion, one million, two hundred twenty thousand".