21124231403 has 8 divisors (see below), whose sum is σ = 23085123120. Its totient is φ = 19170090880.

The previous prime is 21124231391. The next prime is 21124231411. The reversal of 21124231403 is 30413242112.

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 21124231403 - 2¹⁴ = 21124215019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21124231423) 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, 1681250 + ... + 1693767.

It is an arithmetic number, because the mean of its divisors is an integer number (2885640390).

Almost surely, 2^21124231403 is an apocalyptic number.

21124231403 is a deficient number, since it is larger than the sum of its proper divisors (1960891717).

21124231403 is a wasteful number, since it uses less digits than its factorization.

21124231403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3375597.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21124231403 its reverse (30413242112), we get a palindrome (51537473515).

The spelling of 21124231403 in words is "twenty-one billion, one hundred twenty-four million, two hundred thirty-one thousand, four hundred three".