22222220111999 has 4 divisors (see below), whose sum is σ = 22222987456320. Its totient is φ = 22221452767680.

The previous prime is 22222220111989. The next prime is 22222220112121. The reversal of 22222220111999 is 99911102222222.

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 22222220111999 - 2⁴ = 22222220111983 is a prime.

It is a super-2 number, since 2×22222220111999² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222220111909) 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, 383628719 + ... + 383686640.

It is an arithmetic number, because the mean of its divisors is an integer number (5555746864080).

Almost surely, 2^{22222220111999} is an apocalyptic number.

22222220111999 is a deficient number, since it is larger than the sum of its proper divisors (767344321).

22222220111999 is an equidigital number, since it uses as much as digits as its factorization.

22222220111999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767344320.

The product of its (nonzero) digits is 93312, while the sum is 44.

The spelling of 22222220111999 in words is "twenty-two trillion, two hundred twenty-two billion, two hundred twenty million, one hundred eleven thousand, nine hundred ninety-nine".