221002221232331 has 16 divisors (see below), whose sum is σ = 275535885677568. Its totient is φ = 172209117528000.

The previous prime is 221002221232267. The next prime is 221002221232333. The reversal of 221002221232331 is 133232122200122.

It is not a de Polignac number, because 221002221232331 - 2⁶ = 221002221232267 is a prime.

It is a super-2 number, since 2×221002221232331² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221002221232331.

It is not an unprimeable number, because it can be changed into a prime (221002221232333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31910606 + ... + 38213756.

It is an arithmetic number, because the mean of its divisors is an integer number (17220992854848).

Almost surely, 2^{221002221232331} is an apocalyptic number.

221002221232331 is a deficient number, since it is larger than the sum of its proper divisors (54533664445237).

221002221232331 is a wasteful number, since it uses less digits than its factorization.

221002221232331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6758522.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 221002221232331 its reverse (133232122200122), we get a palindrome (354234343432453).

The spelling of 221002221232331 in words is "two hundred twenty-one trillion, two billion, two hundred twenty-one million, two hundred thirty-two thousand, three hundred thirty-one".