22001231143 has 4 divisors (see below), whose sum is σ = 22013870008. Its totient is φ = 21988592280.

The previous prime is 22001231117. The next prime is 22001231159. The reversal of 22001231143 is 34113210022.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34113210022 = 2 ⋅17056605011.

It is a cyclic number.

It is not a de Polignac number, because 22001231143 - 2⁵ = 22001231111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22001231143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001231543) 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, 6316821 + ... + 6320302.

It is an arithmetic number, because the mean of its divisors is an integer number (5503467502).

Almost surely, 2^22001231143 is an apocalyptic number.

22001231143 is a deficient number, since it is larger than the sum of its proper divisors (12638865).

22001231143 is a wasteful number, since it uses less digits than its factorization.

22001231143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12638864.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 22001231143 its reverse (34113210022), we get a palindrome (56114441165).

The spelling of 22001231143 in words is "twenty-two billion, one million, two hundred thirty-one thousand, one hundred forty-three".