21880244428133 has 32 divisors (see below), whose sum is σ = 29324353900800. Its totient is φ = 15835151033856.

The previous prime is 21880244428117. The next prime is 21880244428201. The reversal of 21880244428133 is 33182444208812.

It is not a de Polignac number, because 21880244428133 - 2⁴ = 21880244428117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21880244422133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 218137016 + ... + 218237297.

It is an arithmetic number, because the mean of its divisors is an integer number (916386059400).

Almost surely, 2^{21880244428133} is an apocalyptic number.

It is an amenable number.

21880244428133 is a deficient number, since it is larger than the sum of its proper divisors (7444109472667).

21880244428133 is a wasteful number, since it uses less digits than its factorization.

21880244428133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436374381.

The product of its (nonzero) digits is 2359296, while the sum is 50.

The spelling of 21880244428133 in words is "twenty-one trillion, eight hundred eighty billion, two hundred forty-four million, four hundred twenty-eight thousand, one hundred thirty-three".