21222200202202 has 8 divisors (see below), whose sum is σ = 31842530032500. Its totient is φ = 10608023524704.

The previous prime is 21222200202173. The next prime is 21222200202221. The reversal of 21222200202202 is 20220200222212.

It can be written as a sum of positive squares in 2 ways, for example, as 20515926361401 + 706273840801 = 4529451^2 + 840401^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21222200202202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1538279577 + ... + 1538293372.

Almost surely, 2^{21222200202202} is an apocalyptic number.

21222200202202 is a deficient number, since it is larger than the sum of its proper divisors (10620329830298).

21222200202202 is a wasteful number, since it uses less digits than its factorization.

21222200202202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3076576400.

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 21222200202202 its reverse (20220200222212), we get a palindrome (41442400424414).

The spelling of 21222200202202 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred million, two hundred two thousand, two hundred two".