21022144133 has 4 divisors (see below), whose sum is σ = 21173382720. Its totient is φ = 20870905548.

The previous prime is 21022144097. The next prime is 21022144147. The reversal of 21022144133 is 33144122012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21022144133 - 2²⁴ = 21005366917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21022144099 and 21022144108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022144193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75619085 + ... + 75619362.

It is an arithmetic number, because the mean of its divisors is an integer number (5293345680).

Almost surely, 2^21022144133 is an apocalyptic number.

It is an amenable number.

21022144133 is a deficient number, since it is larger than the sum of its proper divisors (151238587).

21022144133 is a wasteful number, since it uses less digits than its factorization.

21022144133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151238586.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21022144133 its reverse (33144122012), we get a palindrome (54166266145).

The spelling of 21022144133 in words is "twenty-one billion, twenty-two million, one hundred forty-four thousand, one hundred thirty-three".