21222111219 has 16 divisors (see below), whose sum is σ = 28569552000. Its totient is φ = 14011807680.

The previous prime is 21222111203. The next prime is 21222111227. The reversal of 21222111219 is 91211122212.

It is not a de Polignac number, because 21222111219 - 2⁴ = 21222111203 is a prime.

It is a super-2 number, since 2×21222111219² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21222131219) 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, 141999 + ... + 250215.

It is an arithmetic number, because the mean of its divisors is an integer number (1785597000).

Almost surely, 2^21222111219 is an apocalyptic number.

21222111219 is a deficient number, since it is larger than the sum of its proper divisors (7347440781).

21222111219 is a wasteful number, since it uses less digits than its factorization.

21222111219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108850.

The product of its digits is 288, while the sum is 24.

The spelling of 21222111219 in words is "twenty-one billion, two hundred twenty-two million, one hundred eleven thousand, two hundred nineteen".