221332009903 has 2 divisors, whose sum is σ = 221332009904. Its totient is φ = 221332009902.

The previous prime is 221332009897. The next prime is 221332009973. The reversal of 221332009903 is 309900233122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221332009903 - 2¹³ = 221332001711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221332009973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110666004951 + 110666004952.

It is an arithmetic number, because the mean of its divisors is an integer number (110666004952).

Almost surely, 2^221332009903 is an apocalyptic number.

221332009903 is a deficient number, since it is larger than the sum of its proper divisors (1).

221332009903 is an equidigital number, since it uses as much as digits as its factorization.

221332009903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 34.

The spelling of 221332009903 in words is "two hundred twenty-one billion, three hundred thirty-two million, nine thousand, nine hundred three".