21131200003 has 8 divisors (see below), whose sum is σ = 21820131200. Its totient is φ = 20442723840.

The previous prime is 21131199997. The next prime is 21131200061. The reversal of 21131200003 is 30000213112.

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 21131200003 - 2⁹ = 21131199491 is a prime.

It is a super-2 number, since 2×21131200003² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21131200603) 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, 18078 + ... + 206371.

It is an arithmetic number, because the mean of its divisors is an integer number (2727516400).

Almost surely, 2^21131200003 is an apocalyptic number.

21131200003 is a deficient number, since it is larger than the sum of its proper divisors (688931197).

21131200003 is a wasteful number, since it uses less digits than its factorization.

21131200003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227517.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 21131200003 its reverse (30000213112), we get a palindrome (51131413115).

The spelling of 21131200003 in words is "twenty-one billion, one hundred thirty-one million, two hundred thousand, three".