21202000212222 has 12 divisors (see below), whose sum is σ = 45937667126520. Its totient is φ = 7067333404068.

The previous prime is 21202000212203. The next prime is 21202000212257. The reversal of 21202000212222 is 22221200020212.

21202000212222 is a `hidden beast` number, since 212 + 0 + 20 + 0 + 0 + 212 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1177888900679 = 21202000212222 / (2 + 1 + 2 + 0 + 2 + 0 + 0 + 0 + 2 + 1 + 2 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 21202000212195 and 21202000212204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 588944450322 + ... + 588944450357.

It is an arithmetic number, because the mean of its divisors is an integer number (3828138927210).

Almost surely, 2^{21202000212222} is an apocalyptic number.

21202000212222 is an abundant number, since it is smaller than the sum of its proper divisors (24735666914298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21202000212222 is a wasteful number, since it uses less digits than its factorization.

21202000212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177888900687 (or 1177888900684 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 21202000212222 its reverse (22221200020212), we get a palindrome (43423200232434).

The spelling of 21202000212222 in words is "twenty-one trillion, two hundred two billion, two hundred twelve thousand, two hundred twenty-two".