21130401003 has 16 divisors (see below), whose sum is σ = 28964042016. Its totient is φ = 13692602880.

The previous prime is 21130400989. The next prime is 21130401031. The reversal of 21130401003 is 30010403112.

It is not a de Polignac number, because 21130401003 - 2¹⁴ = 21130384619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21130401203) 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, 18483 + ... + 206403.

It is an arithmetic number, because the mean of its divisors is an integer number (1810252626).

Almost surely, 2^21130401003 is an apocalyptic number.

21130401003 is a deficient number, since it is larger than the sum of its proper divisors (7833641013).

21130401003 is a wasteful number, since it uses less digits than its factorization.

21130401003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188974.

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

Adding to 21130401003 its reverse (30010403112), we get a palindrome (51140804115).

The spelling of 21130401003 in words is "twenty-one billion, one hundred thirty million, four hundred one thousand, three".