21222132124 has 6 divisors (see below), whose sum is σ = 37138731224. Its totient is φ = 10611066060.

The previous prime is 21222132119. The next prime is 21222132149. The reversal of 21222132124 is 42123122212.

It is a junction number, because it is equal to n+sod(n) for n = 21222132095 and 21222132104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2652766512 + ... + 2652766519.

Almost surely, 2^21222132124 is an apocalyptic number.

It is an amenable number.

21222132124 is a deficient number, since it is larger than the sum of its proper divisors (15916599100).

21222132124 is a wasteful number, since it uses less digits than its factorization.

21222132124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5305533035 (or 5305533033 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

Adding to 21222132124 its reverse (42123122212), we get a palindrome (63345254336).

The spelling of 21222132124 in words is "twenty-one billion, two hundred twenty-two million, one hundred thirty-two thousand, one hundred twenty-four".