21124231022 has 8 divisors (see below), whose sum is σ = 31687080456. Its totient is φ = 10561870872.

The previous prime is 21124231019. The next prime is 21124231039. The reversal of 21124231022 is 22013242112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21124230985 and 21124231003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17648 + ... + 206300.

It is an arithmetic number, because the mean of its divisors is an integer number (3960885057).

Almost surely, 2^21124231022 is an apocalyptic number.

21124231022 is a deficient number, since it is larger than the sum of its proper divisors (10562849434).

21124231022 is a wasteful number, since it uses less digits than its factorization.

21124231022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244642.

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

Adding to 21124231022 its reverse (22013242112), we get a palindrome (43137473134).

The spelling of 21124231022 in words is "twenty-one billion, one hundred twenty-four million, two hundred thirty-one thousand, twenty-two".