221221432230299 has 2 divisors, whose sum is σ = 221221432230300. Its totient is φ = 221221432230298.

The previous prime is 221221432230179. The next prime is 221221432230307. The reversal of 221221432230299 is 992032234122122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221221432230299 - 2¹² = 221221432226203 is a prime.

It is not a weakly prime, because it can be changed into another prime (221221432230499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110610716115149 + 110610716115150.

It is an arithmetic number, because the mean of its divisors is an integer number (110610716115150).

Almost surely, 2^{221221432230299} is an apocalyptic number.

221221432230299 is a deficient number, since it is larger than the sum of its proper divisors (1).

221221432230299 is an equidigital number, since it uses as much as digits as its factorization.

221221432230299 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 44.

The spelling of 221221432230299 in words is "two hundred twenty-one trillion, two hundred twenty-one billion, four hundred thirty-two million, two hundred thirty thousand, two hundred ninety-nine".