21022232331 has 16 divisors (see below), whose sum is σ = 28166485248. Its totient is φ = 13946460000.

The previous prime is 21022232321. The next prime is 21022232359. The reversal of 21022232331 is 13323222012.

It is a happy number.

It is not a de Polignac number, because 21022232331 - 2²³ = 21013843723 is a prime.

It is a super-3 number, since 3×21022232331³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 21022232298 and 21022232307.

It is not an unprimeable number, because it can be changed into a prime (21022232321) 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, 1731181 + ... + 1743281.

It is an arithmetic number, because the mean of its divisors is an integer number (1760405328).

Almost surely, 2^21022232331 is an apocalyptic number.

21022232331 is a deficient number, since it is larger than the sum of its proper divisors (7144252917).

21022232331 is a wasteful number, since it uses less digits than its factorization.

21022232331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14882.

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

Adding to 21022232331 its reverse (13323222012), we get a palindrome (34345454343).

The spelling of 21022232331 in words is "twenty-one billion, twenty-two million, two hundred thirty-two thousand, three hundred thirty-one".