21422243133 has 24 divisors (see below), whose sum is σ = 32800742208. Its totient is φ = 13426100352.

The previous prime is 21422243113. The next prime is 21422243179. The reversal of 21422243133 is 33134222412.

21422243133 is a `hidden beast` number, since 2 + 1 + 4 + 222 + 431 + 3 + 3 = 666.

It is not a de Polignac number, because 21422243133 - 2³⁰ = 20348501309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21422243097 and 21422243106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21422243113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55816 + ... + 214382.

It is an arithmetic number, because the mean of its divisors is an integer number (1366697592).

Almost surely, 2^21422243133 is an apocalyptic number.

It is an amenable number.

21422243133 is a deficient number, since it is larger than the sum of its proper divisors (11378499075).

21422243133 is a wasteful number, since it uses less digits than its factorization.

21422243133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159473 (or 159470 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

Adding to 21422243133 its reverse (33134222412), we get a palindrome (54556465545).

The spelling of 21422243133 in words is "twenty-one billion, four hundred twenty-two million, two hundred forty-three thousand, one hundred thirty-three".