221222043347 has 2 divisors, whose sum is σ = 221222043348. Its totient is φ = 221222043346.

The previous prime is 221222043311. The next prime is 221222043349. The reversal of 221222043347 is 743340222122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221222043347 - 2²² = 221217849043 is a prime.

Together with 221222043349, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (221222043349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110611021673 + 110611021674.

It is an arithmetic number, because the mean of its divisors is an integer number (110611021674).

Almost surely, 2^221222043347 is an apocalyptic number.

221222043347 is a deficient number, since it is larger than the sum of its proper divisors (1).

221222043347 is an equidigital number, since it uses as much as digits as its factorization.

221222043347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 32.

Adding to 221222043347 its reverse (743340222122), we get a palindrome (964562265469).

The spelling of 221222043347 in words is "two hundred twenty-one billion, two hundred twenty-two million, forty-three thousand, three hundred forty-seven".