221010112002122 has 4 divisors (see below), whose sum is σ = 331515168003186. Its totient is φ = 110505056001060.

The previous prime is 221010112002109. The next prime is 221010112002137. The reversal of 221010112002122 is 221200211010122.

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., 170517135684841 + 50492976317281 = 13058221^2 + 7105841^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 221010112002122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55252528000529 + ... + 55252528000532.

Almost surely, 2^{221010112002122} is an apocalyptic number.

221010112002122 is a deficient number, since it is larger than the sum of its proper divisors (110505056001064).

221010112002122 is a wasteful number, since it uses less digits than its factorization.

221010112002122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110505056001063.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221010112002122 its reverse (221200211010122), we get a palindrome (442210323012244).

The spelling of 221010112002122 in words is "two hundred twenty-one trillion, ten billion, one hundred twelve million, two thousand, one hundred twenty-two".