21200202221222 has 8 divisors (see below), whose sum is σ = 32248194928272. Its totient is φ = 10450803911800.

The previous prime is 21200202221221. The next prime is 21200202221269. The reversal of 21200202221222 is 22212220200212.

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

It is a junction number, because it is equal to n+sod(n) for n = 21200202221194 and 21200202221203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200202221221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74648599229 + ... + 74648599512.

It is an arithmetic number, because the mean of its divisors is an integer number (4031024366034).

Almost surely, 2^{21200202221222} is an apocalyptic number.

21200202221222 is a deficient number, since it is larger than the sum of its proper divisors (11047992707050).

21200202221222 is a wasteful number, since it uses less digits than its factorization.

21200202221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149297198814.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 21200202221222 its reverse (22212220200212), we get a palindrome (43412422421434).

The spelling of 21200202221222 in words is "twenty-one trillion, two hundred billion, two hundred two million, two hundred twenty-one thousand, two hundred twenty-two".