21433122 has 24 divisors (see below), whose sum is σ = 46573020. Its totient is φ = 7123680.

The previous prime is 21433103. The next prime is 21433123. The reversal of 21433122 is 22133412.

It can be written as a sum of positive squares in 2 ways, for example, as 20985561 + 447561 = 4581^2 + 669^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21433095 and 21433104.

It is not an unprimeable number, because it can be changed into a prime (21433123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5472 + ... + 8532.

Almost surely, 2^21433122 is an apocalyptic number.

21433122 is an abundant number, since it is smaller than the sum of its proper divisors (25139898).

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

21433122 is a wasteful number, since it uses less digits than its factorization.

21433122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3458 (or 3455 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 21433122 is about 4629.5919906618. The cubic root of 21433122 is about 277.7762722170.

Adding to 21433122 its reverse (22133412), we get a palindrome (43566534).

The spelling of 21433122 in words is "twenty-one million, four hundred thirty-three thousand, one hundred twenty-two".