210002221220122 has 4 divisors (see below), whose sum is σ = 315003331830186. Its totient is φ = 105001110610060.

The previous prime is 210002221220023. The next prime is 210002221220153. The reversal of 210002221220122 is 221022122200012.

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., 175855951022761 + 34146270197361 = 13261069^2 + 5843481^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 210002221220122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52500555305029 + ... + 52500555305032.

Almost surely, 2^{210002221220122} is an apocalyptic number.

210002221220122 is a deficient number, since it is larger than the sum of its proper divisors (105001110610064).

210002221220122 is a wasteful number, since it uses less digits than its factorization.

210002221220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105001110610063.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 210002221220122 its reverse (221022122200012), we get a palindrome (431024343420134).

The spelling of 210002221220122 in words is "two hundred ten trillion, two billion, two hundred twenty-one million, two hundred twenty thousand, one hundred twenty-two".