20002200212122 has 4 divisors (see below), whose sum is σ = 30003300318186. Its totient is φ = 10001100106060.

The previous prime is 20002200212081. The next prime is 20002200212173. The reversal of 20002200212122 is 22121200220002.

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., 15564137509881 + 4438062702241 = 3945141^2 + 2106671^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20002200212096 and 20002200212105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000550053029 + ... + 5000550053032.

Almost surely, 2^{20002200212122} is an apocalyptic number.

20002200212122 is a deficient number, since it is larger than the sum of its proper divisors (10001100106064).

20002200212122 is a wasteful number, since it uses less digits than its factorization.

20002200212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10001100106063.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20002200212122 its reverse (22121200220002), we get a palindrome (42123400432124).

The spelling of 20002200212122 in words is "twenty trillion, two billion, two hundred million, two hundred twelve thousand, one hundred twenty-two".