221258043047 has 2 divisors, whose sum is σ = 221258043048. Its totient is φ = 221258043046.

The previous prime is 221258043023. The next prime is 221258043049. The reversal of 221258043047 is 740340852122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221258043047 - 2¹⁶ = 221257977511 is a prime.

It is a super-2 number, since 2×221258043047² (a number of 23 digits) contains 22 as substring.

Together with 221258043049, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221258043047.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221258043049) 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 as a sum of consecutive naturals, namely, 110629021523 + 110629021524.

It is an arithmetic number, because the mean of its divisors is an integer number (110629021524).

Almost surely, 2^221258043047 is an apocalyptic number.

221258043047 is a deficient number, since it is larger than the sum of its proper divisors (1).

221258043047 is an equidigital number, since it uses as much as digits as its factorization.

221258043047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 107520, while the sum is 38.

Adding to 221258043047 its reverse (740340852122), we get a palindrome (961598895169).

The spelling of 221258043047 in words is "two hundred twenty-one billion, two hundred fifty-eight million, forty-three thousand, forty-seven".