221120203213603 has 2 divisors, whose sum is σ = 221120203213604. Its totient is φ = 221120203213602.

The previous prime is 221120203213561. The next prime is 221120203213621. The reversal of 221120203213603 is 306312302021122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221120203213603 - 2³⁷ = 220982764260131 is a prime.

It is not a weakly prime, because it can be changed into another prime (221120203253603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110560101606801 + 110560101606802.

It is an arithmetic number, because the mean of its divisors is an integer number (110560101606802).

Almost surely, 2^{221120203213603} is an apocalyptic number.

221120203213603 is a deficient number, since it is larger than the sum of its proper divisors (1).

221120203213603 is an equidigital number, since it uses as much as digits as its factorization.

221120203213603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 221120203213603 its reverse (306312302021122), we get a palindrome (527432505234725).

The spelling of 221120203213603 in words is "two hundred twenty-one trillion, one hundred twenty billion, two hundred three million, two hundred thirteen thousand, six hundred three".