22121331143 has 4 divisors (see below), whose sum is σ = 22191114840. Its totient is φ = 22051547448.

The previous prime is 22121331103. The next prime is 22121331149. The reversal of 22121331143 is 34113312122.

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

It is a cyclic number.

It is not a de Polignac number, because 22121331143 - 2¹² = 22121327047 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 (22121331149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34891373 + ... + 34892006.

It is an arithmetic number, because the mean of its divisors is an integer number (5547778710).

Almost surely, 2^22121331143 is an apocalyptic number.

22121331143 is a deficient number, since it is larger than the sum of its proper divisors (69783697).

22121331143 is an equidigital number, since it uses as much as digits as its factorization.

22121331143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69783696.

The product of its digits is 864, while the sum is 23.

Adding to 22121331143 its reverse (34113312122), we get a palindrome (56234643265).

The spelling of 22121331143 in words is "twenty-two billion, one hundred twenty-one million, three hundred thirty-one thousand, one hundred forty-three".