202221111002122 has 4 divisors (see below), whose sum is σ = 303331666503186. Its totient is φ = 101110555501060.

The previous prime is 202221111002077. The next prime is 202221111002147. The reversal of 202221111002122 is 221200111122202.

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., 108411638992281 + 93809472009841 = 10412091^2 + 9685529^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 202221111002122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50555277750529 + ... + 50555277750532.

Almost surely, 2^{202221111002122} is an apocalyptic number.

202221111002122 is a deficient number, since it is larger than the sum of its proper divisors (101110555501064).

202221111002122 is a wasteful number, since it uses less digits than its factorization.

202221111002122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101110555501063.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 202221111002122 its reverse (221200111122202), we get a palindrome (423421222124324).

The spelling of 202221111002122 in words is "two hundred two trillion, two hundred twenty-one billion, one hundred eleven million, two thousand, one hundred twenty-two".