21130403001 has 16 divisors (see below), whose sum is σ = 29004120768. Its totient is φ = 13673620800.

The previous prime is 21130402999. The next prime is 21130403009. The reversal of 21130403001 is 10030403112.

It is not a de Polignac number, because 21130403001 - 2¹ = 21130402999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21130403009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179355 + ... + 272816.

It is an arithmetic number, because the mean of its divisors is an integer number (1812757548).

Almost surely, 2^21130403001 is an apocalyptic number.

It is an amenable number.

21130403001 is a deficient number, since it is larger than the sum of its proper divisors (7873717767).

21130403001 is a wasteful number, since it uses less digits than its factorization.

21130403001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452632.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21130403001 its reverse (10030403112), we get a palindrome (31160806113).

The spelling of 21130403001 in words is "twenty-one billion, one hundred thirty million, four hundred three thousand, one".