21130311001 has 8 divisors (see below), whose sum is σ = 21479410944. Its totient is φ = 20781298320.

The previous prime is 21130310969. The next prime is 21130311011. The reversal of 21130311001 is 10011303112.

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

It is a cyclic number.

It is not a de Polignac number, because 21130311001 - 2⁵ = 21130310969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21130311011) 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, 621690 + ... + 654796.

It is an arithmetic number, because the mean of its divisors is an integer number (2684926368).

Almost surely, 2^21130311001 is an apocalyptic number.

It is an amenable number.

21130311001 is a deficient number, since it is larger than the sum of its proper divisors (349099943).

21130311001 is a wasteful number, since it uses less digits than its factorization.

21130311001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43631.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 21130311001 its reverse (10011303112), we get a palindrome (31141614113).

The spelling of 21130311001 in words is "twenty-one billion, one hundred thirty million, three hundred eleven thousand, one".