21124231130 has 16 divisors (see below), whose sum is σ = 38256892704. Its totient is φ = 8397853200.

The previous prime is 21124231123. The next prime is 21124231153. The reversal of 21124231130 is 3113242112.

It is a super-2 number, since 2×21124231130² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6478196 + ... + 6481455.

It is an arithmetic number, because the mean of its divisors is an integer number (2391055794).

Almost surely, 2^21124231130 is an apocalyptic number.

21124231130 is a deficient number, since it is larger than the sum of its proper divisors (17132661574).

21124231130 is a wasteful number, since it uses less digits than its factorization.

21124231130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12959821.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21124231130 its reverse (3113242112), we get a palindrome (24237473242).

The spelling of 21124231130 in words is "twenty-one billion, one hundred twenty-four million, two hundred thirty-one thousand, one hundred thirty".