10331221231 has 4 divisors (see below), whose sum is σ = 10664486464. Its totient is φ = 9997956000.

The previous prime is 10331221217. The next prime is 10331221247. The reversal of 10331221231 is 13212213301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13212213301 = 7 ⋅1887459043.

It is a cyclic number.

It is not a de Polignac number, because 10331221231 - 2⁹ = 10331220719 is a prime.

It is a super-2 number, since 2×10331221231² (a number of 21 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 = 10331221199 and 10331221208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10331221931) 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, 166632570 + ... + 166632631.

It is an arithmetic number, because the mean of its divisors is an integer number (2666121616).

Almost surely, 2^10331221231 is an apocalyptic number.

10331221231 is a deficient number, since it is larger than the sum of its proper divisors (333265233).

10331221231 is an equidigital number, since it uses as much as digits as its factorization.

10331221231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333265232.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 10331221231 its reverse (13212213301), we get a palindrome (23543434532).

The spelling of 10331221231 in words is "ten billion, three hundred thirty-one million, two hundred twenty-one thousand, two hundred thirty-one".