220202112122 has 4 divisors (see below), whose sum is σ = 330303168186. Its totient is φ = 110101056060.

The previous prime is 220202112113. The next prime is 220202112127. The reversal of 220202112122 is 221211202022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 183114670561 + 37087441561 = 427919^2 + 192581^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 220202112122.

It is not an unprimeable number, because it can be changed into a prime (220202112127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55050528029 + ... + 55050528032.

Almost surely, 2^220202112122 is an apocalyptic number.

220202112122 is a deficient number, since it is larger than the sum of its proper divisors (110101056064).

220202112122 is a wasteful number, since it uses less digits than its factorization.

220202112122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110101056063.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 220202112122 its reverse (221211202022), we get a palindrome (441413314144).

The spelling of 220202112122 in words is "two hundred twenty billion, two hundred two million, one hundred twelve thousand, one hundred twenty-two".