210202112210122 has 4 divisors (see below), whose sum is σ = 315303168315186. Its totient is φ = 105101056105060.

The previous prime is 210202112210087. The next prime is 210202112210171. The reversal of 210202112210122 is 221012211202012.

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., 204575780394001 + 5626331816121 = 14302999^2 + 2371989^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 210202112210122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52550528052529 + ... + 52550528052532.

Almost surely, 2^{210202112210122} is an apocalyptic number.

210202112210122 is a deficient number, since it is larger than the sum of its proper divisors (105101056105064).

210202112210122 is a wasteful number, since it uses less digits than its factorization.

210202112210122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105101056105063.

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

Adding to 210202112210122 its reverse (221012211202012), we get a palindrome (431214323412134).

The spelling of 210202112210122 in words is "two hundred ten trillion, two hundred two billion, one hundred twelve million, two hundred ten thousand, one hundred twenty-two".