21222200022213 has 16 divisors (see below), whose sum is σ = 30028384501056. Its totient is φ = 13285831752960.

The previous prime is 21222200022211. The next prime is 21222200022251. The reversal of 21222200022213 is 31222000222212.

It is not a de Polignac number, because 21222200022213 - 2¹ = 21222200022211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21222200022213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222200022211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 469640578 + ... + 469685763.

It is an arithmetic number, because the mean of its divisors is an integer number (1876774031316).

Almost surely, 2^{21222200022213} is an apocalyptic number.

It is an amenable number.

21222200022213 is a deficient number, since it is larger than the sum of its proper divisors (8806184478843).

21222200022213 is a wasteful number, since it uses less digits than its factorization.

21222200022213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939326804.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 21222200022213 its reverse (31222000222212), we get a palindrome (52444200244425).

The spelling of 21222200022213 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred million, twenty-two thousand, two hundred thirteen".