21120223130 has 32 divisors (see below), whose sum is σ = 38402477568. Its totient is φ = 8362368000.

The previous prime is 21120223109. The next prime is 21120223177. The reversal of 21120223130 is 3132202112.

It is a junction number, because it is equal to n+sod(n) for n = 21120223099 and 21120223108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4396730 + ... + 4401530.

It is an arithmetic number, because the mean of its divisors is an integer number (1200077424).

Almost surely, 2^21120223130 is an apocalyptic number.

21120223130 is a deficient number, since it is larger than the sum of its proper divisors (17282254438).

21120223130 is a wasteful number, since it uses less digits than its factorization.

21120223130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9182.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21120223130 its reverse (3132202112), we get a palindrome (24252425242).

The spelling of 21120223130 in words is "twenty-one billion, one hundred twenty million, two hundred twenty-three thousand, one hundred thirty".