21133323003 has 16 divisors (see below), whose sum is σ = 30514821120. Its totient is φ = 12932463264.

The previous prime is 21133322989. The next prime is 21133323031. The reversal of 21133323003 is 30032333112.

It is not a de Polignac number, because 21133323003 - 2⁵ = 21133322971 is a prime.

It is a super-2 number, since 2×21133323003² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21133323083) 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, 1506651 + ... + 1520612.

It is an arithmetic number, because the mean of its divisors is an integer number (1907176320).

Almost surely, 2^21133323003 is an apocalyptic number.

21133323003 is a deficient number, since it is larger than the sum of its proper divisors (9381498117).

21133323003 is a wasteful number, since it uses less digits than its factorization.

21133323003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3027458.

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

Adding to 21133323003 its reverse (30032333112), we get a palindrome (51165656115).

The spelling of 21133323003 in words is "twenty-one billion, one hundred thirty-three million, three hundred twenty-three thousand, three".