21283122 has 32 divisors (see below), whose sum is σ = 49104000. Its totient is φ = 6023808.

The previous prime is 21283117. The next prime is 21283127. The reversal of 21283122 is 22138212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21283117) and next prime (21283127).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (21283127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2254 + ... + 6902.

It is an arithmetic number, because the mean of its divisors is an integer number (1534500).

Almost surely, 2^21283122 is an apocalyptic number.

21283122 is an abundant number, since it is smaller than the sum of its proper divisors (27820878).

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

21283122 is a wasteful number, since it uses less digits than its factorization.

21283122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4770.

The product of its digits is 384, while the sum is 21.

The square root of 21283122 is about 4613.3634151235. The cubic root of 21283122 is about 277.1267475921.

The spelling of 21283122 in words is "twenty-one million, two hundred eighty-three thousand, one hundred twenty-two".