22621143 has 8 divisors (see below), whose sum is σ = 30611968. Its totient is φ = 14855544.

The previous prime is 22621141. The next prime is 22621163. The reversal of 22621143 is 34112622.

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

It is not a de Polignac number, because 22621143 - 2¹ = 22621141 is a prime.

It is a super-2 number, since 2×22621143² = 1023432221252898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22621141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56071 + ... + 56472.

It is an arithmetic number, because the mean of its divisors is an integer number (3826496).

Almost surely, 2^22621143 is an apocalyptic number.

22621143 is a deficient number, since it is larger than the sum of its proper divisors (7990825).

22621143 is a wasteful number, since it uses less digits than its factorization.

22621143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112613.

The product of its digits is 576, while the sum is 21.

The square root of 22621143 is about 4756.1689414906. The cubic root of 22621143 is about 282.8165683999.

Adding to 22621143 its reverse (34112622), we get a palindrome (56733765).

The spelling of 22621143 in words is "twenty-two million, six hundred twenty-one thousand, one hundred forty-three".