21223425432231 has 48 divisors (see below), whose sum is σ = 34830596256768. Its totient is φ = 12338773675200.

The previous prime is 21223425432199. The next prime is 21223425432241. The reversal of 21223425432231 is 13223452432212.

21223425432231 is a `hidden beast` number, since 2 + 1 + 2 + 2 + 3 + 425 + 4 + 3 + 223 + 1 = 666.

It is not a de Polignac number, because 21223425432231 - 2⁵ = 21223425432199 is a prime.

It is a super-3 number, since 3×21223425432231³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21223425432241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40542751 + ... + 41062896.

It is an arithmetic number, because the mean of its divisors is an integer number (725637422016).

Almost surely, 2^{21223425432231} is an apocalyptic number.

21223425432231 is a deficient number, since it is larger than the sum of its proper divisors (13607170824537).

21223425432231 is a wasteful number, since it uses less digits than its factorization.

21223425432231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81605772 (or 81605769 counting only the distinct ones).

The product of its digits is 138240, while the sum is 36.

Adding to 21223425432231 its reverse (13223452432212), we get a palindrome (34446877864443).

The spelling of 21223425432231 in words is "twenty-one trillion, two hundred twenty-three billion, four hundred twenty-five million, four hundred thirty-two thousand, two hundred thirty-one".