22111689999 has 64 divisors (see below), whose sum is σ = 36541725696. Its totient is φ = 11606851584.

The previous prime is 22111689959. The next prime is 22111690031. The reversal of 22111689999 is 99998611122.

It is a Cunningham number, because it is equal to 148700²-1.

It is not a de Polignac number, because 22111689999 - 2⁷ = 22111689871 is a prime.

It is a super-2 number, since 2×22111689999² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22111689959) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2523544 + ... + 2532290.

It is an arithmetic number, because the mean of its divisors is an integer number (570964464).

Almost surely, 2^22111689999 is an apocalyptic number.

22111689999 is a deficient number, since it is larger than the sum of its proper divisors (14430035697).

22111689999 is a wasteful number, since it uses less digits than its factorization.

22111689999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8944.

The product of its digits is 1259712, while the sum is 57.

The spelling of 22111689999 in words is "twenty-two billion, one hundred eleven million, six hundred eighty-nine thousand, nine hundred ninety-nine".