210020202122 has 4 divisors (see below), whose sum is σ = 315030303186. Its totient is φ = 105010101060.

The previous prime is 210020202083. The next prime is 210020202157. The reversal of 210020202122 is 221202020012.

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., 184256421001 + 25763781121 = 429251^2 + 160511^2 .

It is a junction number, because it is equal to n+sod(n) for n = 210020202097 and 210020202106.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52505050529 + ... + 52505050532.

Almost surely, 2^210020202122 is an apocalyptic number.

210020202122 is a deficient number, since it is larger than the sum of its proper divisors (105010101064).

210020202122 is a wasteful number, since it uses less digits than its factorization.

210020202122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105010101063.

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

Adding to 210020202122 its reverse (221202020012), we get a palindrome (431222222134).

The spelling of 210020202122 in words is "two hundred ten billion, twenty million, two hundred two thousand, one hundred twenty-two".