221311131233 has 8 divisors (see below), whose sum is σ = 222167994048. Its totient is φ = 220454385424.

The previous prime is 221311131169. The next prime is 221311131241. The reversal of 221311131233 is 332131113122.

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

It is a cyclic number.

It is not a de Polignac number, because 221311131233 - 2⁶ = 221311131169 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221311131199 and 221311131208.

It is not an unprimeable number, because it can be changed into a prime (221311131733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6972866 + ... + 7004532.

It is an arithmetic number, because the mean of its divisors is an integer number (27770999256).

Almost surely, 2^221311131233 is an apocalyptic number.

It is an amenable number.

221311131233 is a deficient number, since it is larger than the sum of its proper divisors (856862815).

221311131233 is a wasteful number, since it uses less digits than its factorization.

221311131233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58503.

The product of its digits is 648, while the sum is 23.

Adding to 221311131233 its reverse (332131113122), we get a palindrome (553442244355).

The spelling of 221311131233 in words is "two hundred twenty-one billion, three hundred eleven million, one hundred thirty-one thousand, two hundred thirty-three".