20022221143 has 2 divisors, whose sum is σ = 20022221144. Its totient is φ = 20022221142.

The previous prime is 20022221099. The next prime is 20022221159. The reversal of 20022221143 is 34112222002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20022221143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20022221143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20022221243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10011110571 + 10011110572.

It is an arithmetic number, because the mean of its divisors is an integer number (10011110572).

Almost surely, 2^20022221143 is an apocalyptic number.

20022221143 is a deficient number, since it is larger than the sum of its proper divisors (1).

20022221143 is an equidigital number, since it uses as much as digits as its factorization.

20022221143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20022221143 its reverse (34112222002), we get a palindrome (54134443145).

It can be divided in two parts, 20022 and 221143, that added together give a triangular number (241165 = T₆₉₄).

The spelling of 20022221143 in words is "twenty billion, twenty-two million, two hundred twenty-one thousand, one hundred forty-three".