22143401 has 16 divisors (see below), whose sum is σ = 26925696. Its totient is φ = 17776896.

The previous prime is 22143397. The next prime is 22143421. The reversal of 22143401 is 10434122.

It is a cyclic number.

It is not a de Polignac number, because 22143401 - 2² = 22143397 is a prime.

It is a super-3 number, since 3×22143401³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 22143401.

It is not an unprimeable number, because it can be changed into a prime (22143421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37430 + ... + 38016.

It is an arithmetic number, because the mean of its divisors is an integer number (1682856).

Almost surely, 2^22143401 is an apocalyptic number.

It is an amenable number.

22143401 is a deficient number, since it is larger than the sum of its proper divisors (4782295).

22143401 is a wasteful number, since it uses less digits than its factorization.

22143401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 22143401 is about 4705.6775282631. The cubic root of 22143401 is about 280.8114260183.

Adding to 22143401 its reverse (10434122), we get a palindrome (32577523).

The spelling of 22143401 in words is "twenty-two million, one hundred forty-three thousand, four hundred one".