21132003333 has 16 divisors (see below), whose sum is σ = 32214978176. Its totient is φ = 12070244160.

The previous prime is 21132003293. The next prime is 21132003341. The reversal of 21132003333 is 33330023112.

It is not a de Polignac number, because 21132003333 - 2¹³ = 21131995141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21132003383) 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, 165766 + ... + 264087.

It is an arithmetic number, because the mean of its divisors is an integer number (2013436136).

Almost surely, 2^21132003333 is an apocalyptic number.

It is an amenable number.

21132003333 is a deficient number, since it is larger than the sum of its proper divisors (11082974843).

21132003333 is a wasteful number, since it uses less digits than its factorization.

21132003333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432204.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 21132003333 its reverse (33330023112), we get a palindrome (54462026445).

The spelling of 21132003333 in words is "twenty-one billion, one hundred thirty-two million, three thousand, three hundred thirty-three".