21422011124 has 12 divisors (see below), whose sum is σ = 39118455264. Its totient is φ = 10245309624.

The previous prime is 21422011123. The next prime is 21422011139. The reversal of 21422011124 is 42111022412.

It is a junction number, because it is equal to n+sod(n) for n = 21422011096 and 21422011105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21422011123) 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, 116423882 + ... + 116424065.

It is an arithmetic number, because the mean of its divisors is an integer number (3259871272).

Almost surely, 2^21422011124 is an apocalyptic number.

It is an amenable number.

21422011124 is a deficient number, since it is larger than the sum of its proper divisors (17696444140).

21422011124 is a wasteful number, since it uses less digits than its factorization.

21422011124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232847974 (or 232847972 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21422011124 its reverse (42111022412), we get a palindrome (63533033536).

The spelling of 21422011124 in words is "twenty-one billion, four hundred twenty-two million, eleven thousand, one hundred twenty-four".