210002220122 has 4 divisors (see below), whose sum is σ = 315003330186. Its totient is φ = 105001110060.

The previous prime is 210002220119. The next prime is 210002220133. The reversal of 210002220122 is 221022200012.

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., 106544140921 + 103458079201 = 326411^2 + 321649^2 .

It is a junction number, because it is equal to n+sod(n) for n = 210002220097 and 210002220106.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52500555029 + ... + 52500555032.

Almost surely, 2^210002220122 is an apocalyptic number.

210002220122 is a deficient number, since it is larger than the sum of its proper divisors (105001110064).

210002220122 is a wasteful number, since it uses less digits than its factorization.

210002220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105001110063.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 210002220122 its reverse (221022200012), we get a palindrome (431024420134).

The spelling of 210002220122 in words is "two hundred ten billion, two million, two hundred twenty thousand, one hundred twenty-two".