21032133 has 8 divisors (see below), whose sum is σ = 28065888. Its totient is φ = 14009904.

The previous prime is 21032119. The next prime is 21032153. The reversal of 21032133 is 33123012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21032133 - 2¹³ = 21023941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21032153) 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 7 ways as a sum of consecutive naturals, for example, 3235 + ... + 7247.

It is an arithmetic number, because the mean of its divisors is an integer number (3508236).

Almost surely, 2^21032133 is an apocalyptic number.

It is an amenable number.

21032133 is a deficient number, since it is larger than the sum of its proper divisors (7033755).

21032133 is a wasteful number, since it uses less digits than its factorization.

21032133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5763.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 21032133 is about 4586.0803525451. The cubic root of 21032133 is about 276.0330641968.

Adding to 21032133 its reverse (33123012), we get a palindrome (54155145).

The spelling of 21032133 in words is "twenty-one million, thirty-two thousand, one hundred thirty-three".