21022231124 has 12 divisors (see below), whose sum is σ = 36797779200. Its totient is φ = 10508579928.

The previous prime is 21022231121. The next prime is 21022231129. The reversal of 21022231124 is 42113222012.

It is a super-3 number, since 3×21022231124³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21022231096 and 21022231105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022231121) 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, 615194 + ... + 648465.

It is an arithmetic number, because the mean of its divisors is an integer number (3066481600).

Almost surely, 2^21022231124 is an apocalyptic number.

It is an amenable number.

21022231124 is a deficient number, since it is larger than the sum of its proper divisors (15775548076).

21022231124 is a wasteful number, since it uses less digits than its factorization.

21022231124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267822 (or 1267820 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21022231124 its reverse (42113222012), we get a palindrome (63135453136).

The spelling of 21022231124 in words is "twenty-one billion, twenty-two million, two hundred thirty-one thousand, one hundred twenty-four".