21033441213 has 8 divisors (see below), whose sum is σ = 28056288000. Its totient is φ = 14016444288.

The previous prime is 21033441211. The next prime is 21033441229. The reversal of 21033441213 is 31214433012.

It is a happy number.

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

It is not a de Polignac number, because 21033441213 - 2¹ = 21033441211 is a prime.

It is a super-2 number, since 2×21033441213² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21033441211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1454068 + ... + 1468461.

It is an arithmetic number, because the mean of its divisors is an integer number (3507036000).

Almost surely, 2^21033441213 is an apocalyptic number.

It is an amenable number.

21033441213 is a deficient number, since it is larger than the sum of its proper divisors (7022846787).

21033441213 is a wasteful number, since it uses less digits than its factorization.

21033441213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2924931.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21033441213 its reverse (31214433012), we get a palindrome (52247874225).

The spelling of 21033441213 in words is "twenty-one billion, thirty-three million, four hundred forty-one thousand, two hundred thirteen".