1020120012200 has 48 divisors (see below), whose sum is σ = 2416529601180. Its totient is φ = 400348981760.

The previous prime is 1020120012139. The next prime is 1020120012209. The reversal of 1020120012200 is 22100210201.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 472813012996 + 547306999204 = 687614^2 + 739802^2 .

It is not an unprimeable number, because it can be changed into a prime (1020120012209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48108269 + ... + 48129468.

Almost surely, 2^{1020120012200} is an apocalyptic number.

1020120012200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020120012200 is an abundant number, since it is smaller than the sum of its proper divisors (1396409588980).

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

1020120012200 is a wasteful number, since it uses less digits than its factorization.

1020120012200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96237806 (or 96237797 counting only the distinct ones).

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

Adding to 1020120012200 its reverse (22100210201), we get a palindrome (1042220222401).

The spelling of 1020120012200 in words is "one trillion, twenty billion, one hundred twenty million, twelve thousand, two hundred".