21230322331331 has 16 divisors (see below), whose sum is σ = 21805026647040. Its totient is φ = 20660762713920.

The previous prime is 21230322331279. The next prime is 21230322331441. The reversal of 21230322331331 is 13313322303212.

It is a cyclic number.

It is not a de Polignac number, because 21230322331331 - 2²² = 21230318137027 is a prime.

It is a super-2 number, since 2×21230322331331² (a number of 27 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 = 21230322331294 and 21230322331303.

It is not an unprimeable number, because it can be changed into a prime (21230322331831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104143655 + ... + 104347311.

It is an arithmetic number, because the mean of its divisors is an integer number (1362814165440).

Almost surely, 2^{21230322331331} is an apocalyptic number.

21230322331331 is a deficient number, since it is larger than the sum of its proper divisors (574704315709).

21230322331331 is a wasteful number, since it uses less digits than its factorization.

21230322331331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216274.

The product of its (nonzero) digits is 11664, while the sum is 29.

Adding to 21230322331331 its reverse (13313322303212), we get a palindrome (34543644634543).

The spelling of 21230322331331 in words is "twenty-one trillion, two hundred thirty billion, three hundred twenty-two million, three hundred thirty-one thousand, three hundred thirty-one".