21223330311 has 8 divisors (see below), whose sum is σ = 28300299264. Its totient is φ = 14147624120.

The previous prime is 21223330309. The next prime is 21223330313. The reversal of 21223330311 is 11303332212.

It is an interprime number because it is at equal distance from previous prime (21223330309) and next prime (21223330313).

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 21223330311 - 2¹ = 21223330309 is a prime.

It is a super-2 number, since 2×21223330311² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21223330313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275751 + ... + 344216.

It is an arithmetic number, because the mean of its divisors is an integer number (3537537408).

Almost surely, 2^21223330311 is an apocalyptic number.

21223330311 is a deficient number, since it is larger than the sum of its proper divisors (7076968953).

21223330311 is a wasteful number, since it uses less digits than its factorization.

21223330311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631381.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21223330311 its reverse (11303332212), we get a palindrome (32526662523).

The spelling of 21223330311 in words is "twenty-one billion, two hundred twenty-three million, three hundred thirty thousand, three hundred eleven".