222012202220020 has 36 divisors (see below), whose sum is σ = 495263898875340. Its totient is φ = 83581064363008.

The previous prime is 222012202219993. The next prime is 222012202220021. The reversal of 222012202220020 is 20022202210222.

It can be written as a sum of positive squares in 6 ways, for example, as 36979679912464 + 185032522307556 = 6081092^2 + 13602666^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 222012202220020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222012202220021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19205202025 + ... + 19205213584.

It is an arithmetic number, because the mean of its divisors is an integer number (13757330524315).

Almost surely, 2^{222012202220020} is an apocalyptic number.

222012202220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222012202220020 is an abundant number, since it is smaller than the sum of its proper divisors (273251696655320).

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

222012202220020 is a wasteful number, since it uses less digits than its factorization.

222012202220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38410415652 (or 38410415633 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 222012202220020 its reverse (20022202210222), we get a palindrome (242034404430242).

It can be divided in two parts, 222012202 and 220020, that added together give a palindrome (222232222).

The spelling of 222012202220020 in words is "two hundred twenty-two trillion, twelve billion, two hundred two million, two hundred twenty thousand, twenty".