22091039986 has 4 divisors (see below), whose sum is σ = 33136559982. Its totient is φ = 11045519992.

The previous prime is 22091039981. The next prime is 22091040001. The reversal of 22091039986 is 68993019022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68993019022 = 2 ⋅34496509511.

It can be written as a sum of positive squares in only one way, i.e., 12578744025 + 9512295961 = 112155^2 + 97531^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (22091039981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5522759995 + ... + 5522759998.

Almost surely, 2^22091039986 is an apocalyptic number.

22091039986 is a deficient number, since it is larger than the sum of its proper divisors (11045519996).

22091039986 is a wasteful number, since it uses less digits than its factorization.

22091039986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11045519995.

The product of its (nonzero) digits is 419904, while the sum is 49.

The spelling of 22091039986 in words is "twenty-two billion, ninety-one million, thirty-nine thousand, nine hundred eighty-six".