21112223230 has 32 divisors (see below), whose sum is σ = 43636723200. Its totient is φ = 7204165920.

The previous prime is 21112223221. The next prime is 21112223239. The reversal of 21112223230 is 3232221112.

It is an interprime number because it is at equal distance from previous prime (21112223221) and next prime (21112223239).

It is a junction number, because it is equal to n+sod(n) for n = 21112223198 and 21112223207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21112223239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 699930 + ... + 729469.

It is an arithmetic number, because the mean of its divisors is an integer number (1363647600).

Almost surely, 2^21112223230 is an apocalyptic number.

21112223230 is an abundant number, since it is smaller than the sum of its proper divisors (22524499970).

21112223230 is a wasteful number, since it uses less digits than its factorization.

21112223230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1429624.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21112223230 its reverse (3232221112), we get a palindrome (24344444342).

The spelling of 21112223230 in words is "twenty-one billion, one hundred twelve million, two hundred twenty-three thousand, two hundred thirty".