21330223422 has 32 divisors (see below), whose sum is σ = 45538225920. Its totient is φ = 6640986240.

The previous prime is 21330223399. The next prime is 21330223469. The reversal of 21330223422 is 22432203312.

It is a junction number, because it is equal to n+sod(n) for n = 21330223392 and 21330223401.

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 15 ways as a sum of consecutive naturals, for example, 1309563 + ... + 1325750.

It is an arithmetic number, because the mean of its divisors is an integer number (1423069560).

Almost surely, 2^21330223422 is an apocalyptic number.

21330223422 is an abundant number, since it is smaller than the sum of its proper divisors (24208002498).

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

21330223422 is a wasteful number, since it uses less digits than its factorization.

21330223422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2635408.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 21330223422 its reverse (22432203312), we get a palindrome (43762426734).

The spelling of 21330223422 in words is "twenty-one billion, three hundred thirty million, two hundred twenty-three thousand, four hundred twenty-two".