221313331003 has 4 divisors (see below), whose sum is σ = 222034221640. Its totient is φ = 220592440368.

The previous prime is 221313330941. The next prime is 221313331027. The reversal of 221313331003 is 300133313122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 300133313122 = 2 ⋅150066656561.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221313331003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221313335003) 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 in 3 ways as a sum of consecutive naturals, for example, 360444858 + ... + 360445471.

It is an arithmetic number, because the mean of its divisors is an integer number (55508555410).

Almost surely, 2^221313331003 is an apocalyptic number.

221313331003 is a deficient number, since it is larger than the sum of its proper divisors (720890637).

221313331003 is an equidigital number, since it uses as much as digits as its factorization.

221313331003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720890636.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 221313331003 its reverse (300133313122), we get a palindrome (521446644125).

The spelling of 221313331003 in words is "two hundred twenty-one billion, three hundred thirteen million, three hundred thirty-one thousand, three".