210102122 has 16 divisors (see below), whose sum is σ = 326478600. Its totient is φ = 101333760.

The previous prime is 210102121. The next prime is 210102149. The reversal of 210102122 is 221201012.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 138039001 + 72063121 = 11749^2 + 8489^2 .

It is not an unprimeable number, because it can be changed into a prime (210102121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7097 + ... + 21692.

Almost surely, 2^210102122 is an apocalyptic number.

210102122 is a deficient number, since it is larger than the sum of its proper divisors (116376478).

210102122 is a wasteful number, since it uses less digits than its factorization.

210102122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28921.

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

The square root of 210102122 is about 14494.8998616755. The cubic root of 210102122 is about 594.4885296937.

Adding to 210102122 its reverse (221201012), we get a palindrome (431303134).

It can be divided in two parts, 21010 and 2122, that added together give a palindrome (23132).

The spelling of 210102122 in words is "two hundred ten million, one hundred two thousand, one hundred twenty-two".