21231120322 has 8 divisors (see below), whose sum is σ = 31848877116. Its totient is φ = 10614827952.

The previous prime is 21231120311. The next prime is 21231120343. The reversal of 21231120322 is 22302113212.

It can be written as a sum of positive squares in 2 ways, for example, as 19091225241 + 2139895081 = 138171^2 + 46259^2 .

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

It is a super-3 number, since 3×21231120322³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21231120322.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329113 + ... + 388300.

Almost surely, 2^21231120322 is an apocalyptic number.

21231120322 is a deficient number, since it is larger than the sum of its proper divisors (10617756794).

21231120322 is a wasteful number, since it uses less digits than its factorization.

21231120322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732212.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21231120322 its reverse (22302113212), we get a palindrome (43533233534).

The spelling of 21231120322 in words is "twenty-one billion, two hundred thirty-one million, one hundred twenty thousand, three hundred twenty-two".