22143386 has 4 divisors (see below), whose sum is σ = 33215082. Its totient is φ = 11071692.

The previous prime is 22143383. The next prime is 22143389. The reversal of 22143386 is 68334122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68334122 = 2 ⋅34167061.

It is an interprime number because it is at equal distance from previous prime (22143383) and next prime (22143389).

It can be written as a sum of positive squares in only one way, i.e., 21446161 + 697225 = 4631^2 + 835^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22143383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5535845 + ... + 5535848.

Almost surely, 2^22143386 is an apocalyptic number.

22143386 is a deficient number, since it is larger than the sum of its proper divisors (11071696).

22143386 is a wasteful number, since it uses less digits than its factorization.

22143386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11071695.

The product of its digits is 6912, while the sum is 29.

The square root of 22143386 is about 4705.6759344434. The cubic root of 22143386 is about 280.8113626109.

The spelling of 22143386 in words is "twenty-two million, one hundred forty-three thousand, three hundred eighty-six".