33201421 has 4 divisors (see below), whose sum is σ = 36219744. Its totient is φ = 30183100.

The previous prime is 33201419. The next prime is 33201449. The reversal of 33201421 is 12410233.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 33201421 - 2¹ = 33201419 is a prime.

It is a super-2 number, since 2×33201421² = 2204668712838482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33201395 and 33201404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33201481) 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, 1509145 + ... + 1509166.

It is an arithmetic number, because the mean of its divisors is an integer number (9054936).

Almost surely, 2^33201421 is an apocalyptic number.

It is an amenable number.

33201421 is a deficient number, since it is larger than the sum of its proper divisors (3018323).

33201421 is a wasteful number, since it uses less digits than its factorization.

33201421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3018322.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 33201421 is about 5762.0674241109. The cubic root of 33201421 is about 321.4047004307.

Adding to 33201421 its reverse (12410233), we get a palindrome (45611654).

The spelling of 33201421 in words is "thirty-three million, two hundred one thousand, four hundred twenty-one".