22222001986 has 4 divisors (see below), whose sum is σ = 33333002982. Its totient is φ = 11111000992.

The previous prime is 22222001983. The next prime is 22222002001. The reversal of 22222001986 is 68910022222.

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

It can be written as a sum of positive squares in only one way, i.e., 21209553225 + 1012448761 = 145635^2 + 31819^2 .

It is not an unprimeable number, because it can be changed into a prime (22222001981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555500495 + ... + 5555500498.

Almost surely, 2^22222001986 is an apocalyptic number.

22222001986 is a deficient number, since it is larger than the sum of its proper divisors (11111000996).

22222001986 is a wasteful number, since it uses less digits than its factorization.

22222001986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11111000995.

The product of its (nonzero) digits is 13824, while the sum is 34.

The spelling of 22222001986 in words is "twenty-two billion, two hundred twenty-two million, one thousand, nine hundred eighty-six".