221222303031 has 8 divisors (see below), whose sum is σ = 302935045744. Its totient is φ = 143495547840.

The previous prime is 221222302979. The next prime is 221222303039. The reversal of 221222303031 is 130303222122.

It is a happy number.

221222303031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221222303031 - 2⁹ = 221222302519 is a prime.

It is a super-2 number, since 2×221222303031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221222302989 and 221222303007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221222303039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 996496750 + ... + 996496971.

It is an arithmetic number, because the mean of its divisors is an integer number (37866880718).

Almost surely, 2^221222303031 is an apocalyptic number.

221222303031 is a deficient number, since it is larger than the sum of its proper divisors (81712742713).

221222303031 is a wasteful number, since it uses less digits than its factorization.

221222303031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1992993761.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 221222303031 its reverse (130303222122), we get a palindrome (351525525153).

The spelling of 221222303031 in words is "two hundred twenty-one billion, two hundred twenty-two million, three hundred three thousand, thirty-one".