21224543133 has 8 divisors (see below), whose sum is σ = 28331299008. Its totient is φ = 14133741344.

The previous prime is 21224543101. The next prime is 21224543141. The reversal of 21224543133 is 33134542212.

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

It is a cyclic number.

It is not a de Polignac number, because 21224543133 - 2⁵ = 21224543101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21224543133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21224543633) 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, 3985416 + ... + 3990737.

It is an arithmetic number, because the mean of its divisors is an integer number (3541412376).

Almost surely, 2^21224543133 is an apocalyptic number.

It is an amenable number.

21224543133 is a deficient number, since it is larger than the sum of its proper divisors (7106755875).

21224543133 is an equidigital number, since it uses as much as digits as its factorization.

21224543133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7977043.

The product of its digits is 17280, while the sum is 30.

The spelling of 21224543133 in words is "twenty-one billion, two hundred twenty-four million, five hundred forty-three thousand, one hundred thirty-three".