221343114431 has 2 divisors, whose sum is σ = 221343114432. Its totient is φ = 221343114430.

The previous prime is 221343114337. The next prime is 221343114437. The reversal of 221343114431 is 134411343122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221343114431 - 2²⁶ = 221276005567 is a prime.

It is a super-2 number, since 2×221343114431² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 221343114394 and 221343114403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221343114437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110671557215 + 110671557216.

It is an arithmetic number, because the mean of its divisors is an integer number (110671557216).

Almost surely, 2^221343114431 is an apocalyptic number.

221343114431 is a deficient number, since it is larger than the sum of its proper divisors (1).

221343114431 is an equidigital number, since it uses as much as digits as its factorization.

221343114431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 29.

Adding to 221343114431 its reverse (134411343122), we get a palindrome (355754457553).

The spelling of 221343114431 in words is "two hundred twenty-one billion, three hundred forty-three million, one hundred fourteen thousand, four hundred thirty-one".