221333120031 has 4 divisors (see below), whose sum is σ = 295110826712. Its totient is φ = 147555413352.

The previous prime is 221333119999. The next prime is 221333120089. The reversal of 221333120031 is 130021333122.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 221333120031 - 2⁵ = 221333119999 is a prime.

It is a super-2 number, since 2×221333120031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221333120231) 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, 36888853336 + ... + 36888853341.

It is an arithmetic number, because the mean of its divisors is an integer number (73777706678).

Almost surely, 2^221333120031 is an apocalyptic number.

221333120031 is a deficient number, since it is larger than the sum of its proper divisors (73777706681).

221333120031 is an equidigital number, since it uses as much as digits as its factorization.

221333120031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73777706680.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 221333120031 its reverse (130021333122), we get a palindrome (351354453153).

The spelling of 221333120031 in words is "two hundred twenty-one billion, three hundred thirty-three million, one hundred twenty thousand, thirty-one".