221331203023 has 6 divisors (see below), whose sum is σ = 257466909696. Its totient is φ = 189712459692.

The previous prime is 221331203017. The next prime is 221331203047. The reversal of 221331203023 is 320302133122.

It is not a de Polignac number, because 221331203023 - 2⁹ = 221331202511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221331202985 and 221331203003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221331203323) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2258481615 + ... + 2258481712.

It is an arithmetic number, because the mean of its divisors is an integer number (42911151616).

Almost surely, 2^221331203023 is an apocalyptic number.

221331203023 is a deficient number, since it is larger than the sum of its proper divisors (36135706673).

221331203023 is an equidigital number, since it uses as much as digits as its factorization.

221331203023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4516963341 (or 4516963334 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 221331203023 its reverse (320302133122), we get a palindrome (541633336145).

The spelling of 221331203023 in words is "two hundred twenty-one billion, three hundred thirty-one million, two hundred three thousand, twenty-three".