21232241001 has 12 divisors (see below), whose sum is σ = 32472839412. Its totient is φ = 13322190336.

The previous prime is 21232240979. The next prime is 21232241003. The reversal of 21232241001 is 10014223212.

It is a happy number.

21232241001 is a `hidden beast` number, since 21 + 232 + 2 + 410 + 0 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 16753419225 + 4478821776 = 129435^2 + 66924^2 .

It is a de Polignac number, because none of the positive numbers 2^k-21232241001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21232241003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69386256 + ... + 69386561.

It is an arithmetic number, because the mean of its divisors is an integer number (2706069951).

Almost surely, 2^21232241001 is an apocalyptic number.

It is an amenable number.

21232241001 is a deficient number, since it is larger than the sum of its proper divisors (11240598411).

21232241001 is a wasteful number, since it uses less digits than its factorization.

21232241001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138772840 (or 138772837 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 21232241001 its reverse (10014223212), we get a palindrome (31246464213).

The spelling of 21232241001 in words is "twenty-one billion, two hundred thirty-two million, two hundred forty-one thousand, one".