22143351 has 4 divisors (see below), whose sum is σ = 29524472. Its totient is φ = 14762232.

The previous prime is 22143343. The next prime is 22143361. The reversal of 22143351 is 15334122.

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

It is not a de Polignac number, because 22143351 - 2³ = 22143343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22143301) 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, 3690556 + ... + 3690561.

It is an arithmetic number, because the mean of its divisors is an integer number (7381118).

Almost surely, 2^22143351 is an apocalyptic number.

22143351 is a deficient number, since it is larger than the sum of its proper divisors (7381121).

22143351 is an equidigital number, since it uses as much as digits as its factorization.

22143351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7381120.

The product of its digits is 720, while the sum is 21.

The square root of 22143351 is about 4705.6722155288. The cubic root of 22143351 is about 280.8112146599.

Adding to 22143351 its reverse (15334122), we get a palindrome (37477473).

It can be divided in two parts, 2214 and 3351, that added together give a triangular number (5565 = T₁₀₅).

The spelling of 22143351 in words is "twenty-two million, one hundred forty-three thousand, three hundred fifty-one".