22321994 has 8 divisors (see below), whose sum is σ = 33657060. Its totient is φ = 11102976.

The previous prime is 22321991. The next prime is 22321997. The reversal of 22321994 is 49912322.

It is an interprime number because it is at equal distance from previous prime (22321991) and next prime (22321997).

It can be written as a sum of positive squares in 2 ways, for example, as 21967969 + 354025 = 4687^2 + 595^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×22321994³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 22321994.

It is not an unprimeable number, because it can be changed into a prime (22321991) 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, 28529 + ... + 29300.

Almost surely, 2^22321994 is an apocalyptic number.

22321994 is a deficient number, since it is larger than the sum of its proper divisors (11335066).

22321994 is a wasteful number, since it uses less digits than its factorization.

22321994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58024.

The product of its digits is 7776, while the sum is 32.

The square root of 22321994 is about 4724.6157515718. The cubic root of 22321994 is about 281.5643475250.

The spelling of 22321994 in words is "twenty-two million, three hundred twenty-one thousand, nine hundred ninety-four".