21223111330 has 16 divisors (see below), whose sum is σ = 38229287544. Its totient is φ = 8483091840.

The previous prime is 21223111313. The next prime is 21223111337. The reversal of 21223111330 is 3311132212.

It can be written as a sum of positive squares in 4 ways, for example, as 10671096601 + 10552014729 = 103301^2 + 102723^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21223111298 and 21223111307.

It is not an unprimeable number, because it can be changed into a prime (21223111337) 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, 754587 + ... + 782206.

Almost surely, 2^21223111330 is an apocalyptic number.

21223111330 is a deficient number, since it is larger than the sum of its proper divisors (17006176214).

21223111330 is a wasteful number, since it uses less digits than its factorization.

21223111330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538181.

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

Adding to 21223111330 its reverse (3311132212), we get a palindrome (24534243542).

The spelling of 21223111330 in words is "twenty-one billion, two hundred twenty-three million, one hundred eleven thousand, three hundred thirty".