33422421 has 16 divisors (see below), whose sum is σ = 45859968. Its totient is φ = 21638400.

The previous prime is 33422419. The next prime is 33422447. The reversal of 33422421 is 12422433.

It is not a de Polignac number, because 33422421 - 2¹ = 33422419 is a prime.

It is a super-2 number, since 2×33422421² = 2234116451002482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33422401) 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, 34080 + ... + 35046.

It is an arithmetic number, because the mean of its divisors is an integer number (2866248).

Almost surely, 2^33422421 is an apocalyptic number.

It is an amenable number.

33422421 is a deficient number, since it is larger than the sum of its proper divisors (12437547).

33422421 is a wasteful number, since it uses less digits than its factorization.

33422421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292.

The product of its digits is 1152, while the sum is 21.

The square root of 33422421 is about 5781.2127620422. The cubic root of 33422421 is about 322.1162504782.

Adding to 33422421 its reverse (12422433), we get a palindrome (45844854).

The spelling of 33422421 in words is "thirty-three million, four hundred twenty-two thousand, four hundred twenty-one".