22221019999 has 4 divisors (see below), whose sum is σ = 22441030200. Its totient is φ = 22001009800.

The previous prime is 22221019993. The next prime is 22221020027. The reversal of 22221019999 is 99991012222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22221019999 - 2²³ = 22212631391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221019993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110004949 + ... + 110005150.

It is an arithmetic number, because the mean of its divisors is an integer number (5610257550).

Almost surely, 2^22221019999 is an apocalyptic number.

22221019999 is a deficient number, since it is larger than the sum of its proper divisors (220010201).

22221019999 is a wasteful number, since it uses less digits than its factorization.

22221019999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220010200.

The product of its (nonzero) digits is 104976, while the sum is 46.

The spelling of 22221019999 in words is "twenty-two billion, two hundred twenty-one million, nineteen thousand, nine hundred ninety-nine".