201033421 has 4 divisors (see below), whose sum is σ = 202086144. Its totient is φ = 199980700.

The previous prime is 201033403. The next prime is 201033457. The reversal of 201033421 is 124330102.

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 201033421 - 2¹³ = 201025229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201033395 and 201033404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201033401) 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, 526075 + ... + 526456.

It is an arithmetic number, because the mean of its divisors is an integer number (50521536).

Almost surely, 2^201033421 is an apocalyptic number.

It is an amenable number.

201033421 is a deficient number, since it is larger than the sum of its proper divisors (1052723).

201033421 is a wasteful number, since it uses less digits than its factorization.

201033421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052722.

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

The square root of 201033421 is about 14178.6254975579. The cubic root of 201033421 is about 585.8090648667.

Adding to 201033421 its reverse (124330102), we get a palindrome (325363523).

The spelling of 201033421 in words is "two hundred one million, thirty-three thousand, four hundred twenty-one".