21141231233 has 8 divisors (see below), whose sum is σ = 21276024000. Its totient is φ = 21006536400.

The previous prime is 21141231203. The next prime is 21141231247. The reversal of 21141231233 is 33213214112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21141231233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21141231199 and 21141231208.

It is not an unprimeable number, because it can be changed into a prime (21141231203) 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, 436058 + ... + 482108.

It is an arithmetic number, because the mean of its divisors is an integer number (2659503000).

Almost surely, 2^21141231233 is an apocalyptic number.

It is an amenable number.

21141231233 is a deficient number, since it is larger than the sum of its proper divisors (134792767).

21141231233 is a wasteful number, since it uses less digits than its factorization.

21141231233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48967.

The product of its digits is 864, while the sum is 23.

Adding to 21141231233 its reverse (33213214112), we get a palindrome (54354445345).

The spelling of 21141231233 in words is "twenty-one billion, one hundred forty-one million, two hundred thirty-one thousand, two hundred thirty-three".