21103422 has 8 divisors (see below), whose sum is σ = 42206856. Its totient is φ = 7034472.

The previous prime is 21103403. The next prime is 21103441. The reversal of 21103422 is 22430112.

It is an interprime number because it is at equal distance from previous prime (21103403) and next prime (21103441).

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

21103422 is an admirable number.

It is a super-2 number, since 2×21103422² = 890708840220168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1758613 + ... + 1758624.

It is an arithmetic number, because the mean of its divisors is an integer number (5275857).

Almost surely, 2^21103422 is an apocalyptic number.

21103422 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21103422 is a wasteful number, since it uses less digits than its factorization.

21103422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3517242.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 21103422 is about 4593.8461010356. The cubic root of 21103422 is about 276.3445864075.

Adding to 21103422 its reverse (22430112), we get a palindrome (43533534).

The spelling of 21103422 in words is "twenty-one million, one hundred three thousand, four hundred twenty-two".