55221002143 has 2 divisors, whose sum is σ = 55221002144. Its totient is φ = 55221002142.

The previous prime is 55221002141. The next prime is 55221002167. The reversal of 55221002143 is 34120012255.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55221002143 - 2¹ = 55221002141 is a prime.

Together with 55221002141, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55221002141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27610501071 + 27610501072.

It is an arithmetic number, because the mean of its divisors is an integer number (27610501072).

Almost surely, 2^55221002143 is an apocalyptic number.

55221002143 is a deficient number, since it is larger than the sum of its proper divisors (1).

55221002143 is an equidigital number, since it uses as much as digits as its factorization.

55221002143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 55221002143 its reverse (34120012255), we get a palindrome (89341014398).

The spelling of 55221002143 in words is "fifty-five billion, two hundred twenty-one million, two thousand, one hundred forty-three".