21412622 has 32 divisors (see below), whose sum is σ = 42405120. Its totient is φ = 7850880.

The previous prime is 21412621. The next prime is 21412631. The reversal of 21412622 is 22621412.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21412594 and 21412603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21412621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1472 + ... + 6707.

It is an arithmetic number, because the mean of its divisors is an integer number (1325160).

Almost surely, 2^21412622 is an apocalyptic number.

21412622 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21412622 is a deficient number, since it is larger than the sum of its proper divisors (20992498).

21412622 is a wasteful number, since it uses less digits than its factorization.

21412622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8216.

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

The square root of 21412622 is about 4627.3774430016. The cubic root of 21412622 is about 277.6876830069.

The spelling of 21412622 in words is "twenty-one million, four hundred twelve thousand, six hundred twenty-two".