21223100103 has 8 divisors (see below), whose sum is σ = 28831381488. Its totient is φ = 13881776064.

The previous prime is 21223100089. The next prime is 21223100141. The reversal of 21223100103 is 30100132212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21223100103 - 2¹⁴ = 21223083719 is a prime.

It is a super-2 number, since 2×21223100103² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21223100183) 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, 66739150 + ... + 66739467.

It is an arithmetic number, because the mean of its divisors is an integer number (3603922686).

Almost surely, 2^21223100103 is an apocalyptic number.

21223100103 is a deficient number, since it is larger than the sum of its proper divisors (7608281385).

21223100103 is a wasteful number, since it uses less digits than its factorization.

21223100103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133478673.

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

Adding to 21223100103 its reverse (30100132212), we get a palindrome (51323232315).

The spelling of 21223100103 in words is "twenty-one billion, two hundred twenty-three million, one hundred thousand, one hundred three".