21102321422 has 32 divisors (see below), whose sum is σ = 39142838784. Its totient is φ = 8308591200.

The previous prime is 21102321403. The next prime is 21102321433. The reversal of 21102321422 is 22412320112.

It is a junction number, because it is equal to n+sod(n) for n = 21102321394 and 21102321403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 236354 + ... + 313157.

It is an arithmetic number, because the mean of its divisors is an integer number (1223213712).

Almost surely, 2^21102321422 is an apocalyptic number.

21102321422 is a deficient number, since it is larger than the sum of its proper divisors (18040517362).

21102321422 is a wasteful number, since it uses less digits than its factorization.

21102321422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549744.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21102321422 its reverse (22412320112), we get a palindrome (43514641534).

The spelling of 21102321422 in words is "twenty-one billion, one hundred two million, three hundred twenty-one thousand, four hundred twenty-two".