201421033 has 12 divisors (see below), whose sum is σ = 231910128. Its totient is φ = 173469240.

The previous prime is 201421019. The next prime is 201421057. The reversal of 201421033 is 330124102.

It is a happy number.

It is not a de Polignac number, because 201421033 - 2¹⁷ = 201289961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201420998 and 201421016.

It is not an unprimeable number, because it can be changed into a prime (201421063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21391 + ... + 29332.

It is an arithmetic number, because the mean of its divisors is an integer number (19325844).

Almost surely, 2^201421033 is an apocalyptic number.

It is an amenable number.

201421033 is a deficient number, since it is larger than the sum of its proper divisors (30489095).

201421033 is a wasteful number, since it uses less digits than its factorization.

201421033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50772 (or 50753 counting only the distinct ones).

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

The square root of 201421033 is about 14192.2878000694. The cubic root of 201421033 is about 586.1853221125.

Adding to 201421033 its reverse (330124102), we get a palindrome (531545135).

The spelling of 201421033 in words is "two hundred one million, four hundred twenty-one thousand, thirty-three".