21103225422 has 16 divisors (see below), whose sum is σ = 42241146192. Its totient is φ = 7028625920.

The previous prime is 21103225411. The next prime is 21103225469. The reversal of 21103225422 is 22452230112.

It is a super-2 number, since 2×21103225422² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21103225392 and 21103225401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1437729 + ... + 1452332.

It is an arithmetic number, because the mean of its divisors is an integer number (2640071637).

Almost surely, 2^21103225422 is an apocalyptic number.

21103225422 is an abundant number, since it is smaller than the sum of its proper divisors (21137920770).

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

21103225422 is a wasteful number, since it uses less digits than its factorization.

21103225422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2891283.

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 21103225422 its reverse (22452230112), we get a palindrome (43555455534).

The spelling of 21103225422 in words is "twenty-one billion, one hundred three million, two hundred twenty-five thousand, four hundred twenty-two".