221430673332553 has 4 divisors (see below), whose sum is σ = 221435539665408. Its totient is φ = 221425806999700.

The previous prime is 221430673332521. The next prime is 221430673332577. The reversal of 221430673332553 is 355233376034122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221430673332553 - 2⁵ = 221430673332521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221430673332497 and 221430673332506.

It is not an unprimeable number, because it can be changed into a prime (221430673333553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2433098173 + ... + 2433189178.

It is an arithmetic number, because the mean of its divisors is an integer number (55358884916352).

Almost surely, 2^{221430673332553} is an apocalyptic number.

It is an amenable number.

221430673332553 is a deficient number, since it is larger than the sum of its proper divisors (4866332855).

221430673332553 is an equidigital number, since it uses as much as digits as its factorization.

221430673332553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4866332854.

The product of its (nonzero) digits is 8164800, while the sum is 49.

The spelling of 221430673332553 in words is "two hundred twenty-one trillion, four hundred thirty billion, six hundred seventy-three million, three hundred thirty-two thousand, five hundred fifty-three".