202122102122 has 4 divisors (see below), whose sum is σ = 303183153186. Its totient is φ = 101061051060.

The previous prime is 202122102103. The next prime is 202122102179. The reversal of 202122102122 is 221201221202.

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., 190976866081 + 11145236041 = 437009^2 + 105571^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 202122102122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50530525529 + ... + 50530525532.

Almost surely, 2^202122102122 is an apocalyptic number.

202122102122 is a deficient number, since it is larger than the sum of its proper divisors (101061051064).

202122102122 is a wasteful number, since it uses less digits than its factorization.

202122102122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101061051063.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 202122102122 its reverse (221201221202), we get a palindrome (423323323324).

The spelling of 202122102122 in words is "two hundred two billion, one hundred twenty-two million, one hundred two thousand, one hundred twenty-two".