21102002200222 has 4 divisors (see below), whose sum is σ = 31653003300336. Its totient is φ = 10551001100110.

The previous prime is 21102002200189. The next prime is 21102002200261. The reversal of 21102002200222 is 22200220020112.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 21102002200196 and 21102002200205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5275500550054 + ... + 5275500550057.

It is an arithmetic number, because the mean of its divisors is an integer number (7913250825084).

Almost surely, 2^{21102002200222} is an apocalyptic number.

21102002200222 is a deficient number, since it is larger than the sum of its proper divisors (10551001100114).

21102002200222 is a wasteful number, since it uses less digits than its factorization.

21102002200222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10551001100113.

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

Adding to 21102002200222 its reverse (22200220020112), we get a palindrome (43302222220334).

The spelling of 21102002200222 in words is "twenty-one trillion, one hundred two billion, two million, two hundred thousand, two hundred twenty-two".