21341822 has 8 divisors (see below), whose sum is σ = 32878056. Its totient is φ = 10382472.

The previous prime is 21341821. The next prime is 21341833. The reversal of 21341822 is 22814312.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21341821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144128 + ... + 144275.

It is an arithmetic number, because the mean of its divisors is an integer number (4109757).

Almost surely, 2^21341822 is an apocalyptic number.

21341822 is a deficient number, since it is larger than the sum of its proper divisors (11536234).

21341822 is a wasteful number, since it uses less digits than its factorization.

21341822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288442.

The product of its digits is 768, while the sum is 23.

The square root of 21341822 is about 4619.7209872459. The cubic root of 21341822 is about 277.3812905669.

The spelling of 21341822 in words is "twenty-one million, three hundred forty-one thousand, eight hundred twenty-two".