22012212143 has 4 divisors (see below), whose sum is σ = 22549095408. Its totient is φ = 21475328880.

The previous prime is 22012212107. The next prime is 22012212151. The reversal of 22012212143 is 34121221022.

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 22012212143 - 2¹² = 22012208047 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 (22012212193) 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, 268441571 + ... + 268441652.

It is an arithmetic number, because the mean of its divisors is an integer number (5637273852).

Almost surely, 2^22012212143 is an apocalyptic number.

22012212143 is a deficient number, since it is larger than the sum of its proper divisors (536883265).

22012212143 is an equidigital number, since it uses as much as digits as its factorization.

22012212143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536883264.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 22012212143 its reverse (34121221022), we get a palindrome (56133433165).

The spelling of 22012212143 in words is "twenty-two billion, twelve million, two hundred twelve thousand, one hundred forty-three".