210210122 has 4 divisors (see below), whose sum is σ = 315315186. Its totient is φ = 105105060.

The previous prime is 210210113. The next prime is 210210127. The reversal of 210210122 is 221012012.

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., 166900561 + 43309561 = 12919^2 + 6581^2 .

It is not an unprimeable number, because it can be changed into a prime (210210127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52552529 + ... + 52552532.

Almost surely, 2^210210122 is an apocalyptic number.

210210122 is a deficient number, since it is larger than the sum of its proper divisors (105105064).

210210122 is a wasteful number, since it uses less digits than its factorization.

210210122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105105063.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 210210122 is about 14498.6248313418. The cubic root of 210210122 is about 594.5903750290.

Adding to 210210122 its reverse (221012012), we get a palindrome (431222134).

The spelling of 210210122 in words is "two hundred ten million, two hundred ten thousand, one hundred twenty-two".