21331310001 has 8 divisors (see below), whose sum is σ = 28448485824. Its totient is φ = 14217503760.

The previous prime is 21331309999. The next prime is 21331310023. The reversal of 21331310001 is 10001313312.

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

It is not a de Polignac number, because 21331310001 - 2¹ = 21331309999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21331310101) 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, 827586 + ... + 852971.

It is an arithmetic number, because the mean of its divisors is an integer number (3556060728).

Almost surely, 2^21331310001 is an apocalyptic number.

It is an amenable number.

21331310001 is a deficient number, since it is larger than the sum of its proper divisors (7117175823).

21331310001 is a wasteful number, since it uses less digits than its factorization.

21331310001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684791.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 21331310001 its reverse (10001313312), we get a palindrome (31332623313).

The spelling of 21331310001 in words is "twenty-one billion, three hundred thirty-one million, three hundred ten thousand, one".