1201200020120 has 32 divisors (see below), whose sum is σ = 2702783229120. Its totient is φ = 480465219840.

The previous prime is 1201200020089. The next prime is 1201200020123. The reversal of 1201200020120 is 210200021021.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201200020123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 903569 + ... + 1794111.

It is an arithmetic number, because the mean of its divisors is an integer number (84461975910).

Almost surely, 2^{1201200020120} is an apocalyptic number.

1201200020120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201200020120 is an abundant number, since it is smaller than the sum of its proper divisors (1501583209000).

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

1201200020120 is a wasteful number, since it uses less digits than its factorization.

1201200020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924275 (or 924271 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1201200020120 its reverse (210200021021), we get a palindrome (1411400041141).

Subtracting from 1201200020120 its reverse (210200021021), we obtain a palindrome (990999999099).

The spelling of 1201200020120 in words is "one trillion, two hundred one billion, two hundred million, twenty thousand, one hundred twenty".