21022302331 has 8 divisors (see below), whose sum is σ = 21574753200. Its totient is φ = 20476389600.

The previous prime is 21022302317. The next prime is 21022302341. The reversal of 21022302331 is 13320322012.

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 21022302331 - 2⁹ = 21022301819 is a prime.

It is a super-2 number, since 2×21022302331² (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 = 21022302299 and 21022302308.

It is not an unprimeable number, because it can be changed into a prime (21022302341) 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 7 ways as a sum of consecutive naturals, for example, 1628020 + ... + 1640881.

It is an arithmetic number, because the mean of its divisors is an integer number (2696844150).

Almost surely, 2^21022302331 is an apocalyptic number.

21022302331 is a deficient number, since it is larger than the sum of its proper divisors (552450869).

21022302331 is a wasteful number, since it uses less digits than its factorization.

21022302331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3269069.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21022302331 its reverse (13320322012), we get a palindrome (34342624343).

The spelling of 21022302331 in words is "twenty-one billion, twenty-two million, three hundred two thousand, three hundred thirty-one".