21231001103 has 8 divisors (see below), whose sum is σ = 22872498768. Its totient is φ = 19590695424.

The previous prime is 21231001079. The next prime is 21231001133. The reversal of 21231001103 is 30110013212.

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 21231001103 - 2⁶ = 21231001039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21231001133) 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, 260825 + ... + 332402.

It is an arithmetic number, because the mean of its divisors is an integer number (2859062346).

Almost surely, 2^21231001103 is an apocalyptic number.

21231001103 is a deficient number, since it is larger than the sum of its proper divisors (1641497665).

21231001103 is a wasteful number, since it uses less digits than its factorization.

21231001103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595993.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 21231001103 its reverse (30110013212), we get a palindrome (51341014315).

The spelling of 21231001103 in words is "twenty-one billion, two hundred thirty-one million, one thousand, one hundred three".