12020120220100 has 72 divisors (see below), whose sum is σ = 27777636133128. Its totient is φ = 4499064268800.

The previous prime is 12020120220067. The next prime is 12020120220131. The reversal of 12020120220100 is 102202102021.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 1245130149316 + 10774990070784 = 1115854^2 + 3282528^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20141331 + ... + 20729530.

It is an arithmetic number, because the mean of its divisors is an integer number (385800501849).

Almost surely, 2^{12020120220100} is an apocalyptic number.

12020120220100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12020120220100 is an abundant number, since it is smaller than the sum of its proper divisors (15757515913028).

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

12020120220100 is a wasteful number, since it uses less digits than its factorization.

12020120220100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40871065 (or 40871058 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12020120220100 its reverse (102202102021), we get a palindrome (12122322322121).

The spelling of 12020120220100 in words is "twelve trillion, twenty billion, one hundred twenty million, two hundred twenty thousand, one hundred".