22321966 has 4 divisors (see below), whose sum is σ = 33482952. Its totient is φ = 11160982.

The previous prime is 22321961. The next prime is 22321991. The reversal of 22321966 is 66912322.

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

It is a super-3 number, since 3×22321966³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22321961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5580490 + ... + 5580493.

It is an arithmetic number, because the mean of its divisors is an integer number (8370738).

Almost surely, 2^22321966 is an apocalyptic number.

22321966 is a deficient number, since it is larger than the sum of its proper divisors (11160986).

22321966 is a wasteful number, since it uses less digits than its factorization.

22321966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11160985.

The product of its digits is 7776, while the sum is 31.

The square root of 22321966 is about 4724.6127883669. The cubic root of 22321966 is about 281.5642297965.

The spelling of 22321966 in words is "twenty-two million, three hundred twenty-one thousand, nine hundred sixty-six".