12020220021222 has 72 divisors (see below), whose sum is σ = 30867480798336. Its totient is φ = 3369549534624.

The previous prime is 12020220021221. The next prime is 12020220021253. The reversal of 12020220021222 is 22212002202021.

12020220021222 is a `hidden beast` number, since 1 + 20 + 202 + 200 + 21 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12020220021195 and 12020220021204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020220021221) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 128522758 + ... + 128616249.

It is an arithmetic number, because the mean of its divisors is an integer number (428715011088).

Almost surely, 2^{12020220021222} is an apocalyptic number.

12020220021222 is an abundant number, since it is smaller than the sum of its proper divisors (18847260777114).

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

12020220021222 is a wasteful number, since it uses less digits than its factorization.

12020220021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257139082 (or 257139072 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 12020220021222 its reverse (22212002202021), we get a palindrome (34232222223243).

The spelling of 12020220021222 in words is "twelve trillion, twenty billion, two hundred twenty million, twenty-one thousand, two hundred twenty-two".