221311223699 has 2 divisors, whose sum is σ = 221311223700. Its totient is φ = 221311223698.

The previous prime is 221311223689. The next prime is 221311223711. The reversal of 221311223699 is 996322113122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221311223699 is a prime.

It is not a weakly prime, because it can be changed into another prime (221311223689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110655611849 + 110655611850.

It is an arithmetic number, because the mean of its divisors is an integer number (110655611850).

Almost surely, 2^221311223699 is an apocalyptic number.

221311223699 is a deficient number, since it is larger than the sum of its proper divisors (1).

221311223699 is an equidigital number, since it uses as much as digits as its factorization.

221311223699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 41.

The spelling of 221311223699 in words is "two hundred twenty-one billion, three hundred eleven million, two hundred twenty-three thousand, six hundred ninety-nine".