21303023001 has 32 divisors (see below), whose sum is σ = 31324608000. Its totient is φ = 12798010368.

The previous prime is 21303022999. The next prime is 21303023047. The reversal of 21303023001 is 10032030312.

It is not a de Polignac number, because 21303023001 - 2¹ = 21303022999 is a prime.

It is a super-2 number, since 2×21303023001² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21303023701) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 235365 + ... + 313053.

It is an arithmetic number, because the mean of its divisors is an integer number (978894000).

Almost surely, 2^21303023001 is an apocalyptic number.

It is an amenable number.

21303023001 is a deficient number, since it is larger than the sum of its proper divisors (10021584999).

21303023001 is a wasteful number, since it uses less digits than its factorization.

21303023001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77873.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 21303023001 its reverse (10032030312), we get a palindrome (31335053313).

The spelling of 21303023001 in words is "twenty-one billion, three hundred three million, twenty-three thousand, one".