120001320121220 has 24 divisors (see below), whose sum is σ = 252008808413208. Its totient is φ = 47999378304000.

The previous prime is 120001320121219. The next prime is 120001320121247. The reversal of 120001320121220 is 22121023100021.

It can be written as a sum of positive squares in 4 ways, for example, as 3098170266244 + 116903149854976 = 1760162^2 + 10812176^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71002931 + ... + 72673370.

It is an arithmetic number, because the mean of its divisors is an integer number (10500367017217).

Almost surely, 2^{120001320121220} is an apocalyptic number.

120001320121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120001320121220 is an abundant number, since it is smaller than the sum of its proper divisors (132007488291988).

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

120001320121220 is a wasteful number, since it uses less digits than its factorization.

120001320121220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143718071 (or 143718069 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 120001320121220 its reverse (22121023100021), we get a palindrome (142122343221241).

The spelling of 120001320121220 in words is "one hundred twenty trillion, one billion, three hundred twenty million, one hundred twenty-one thousand, two hundred twenty".