21120103223230 has 96 divisors (see below), whose sum is σ = 44588216484000. Its totient is φ = 7176155627520.

The previous prime is 21120103223221. The next prime is 21120103223237. The reversal of 21120103223230 is 3232230102112.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21120103223237) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4613955 + ... + 7970494.

It is an arithmetic number, because the mean of its divisors is an integer number (464460588375).

Almost surely, 2^{21120103223230} is an apocalyptic number.

21120103223230 is an abundant number, since it is smaller than the sum of its proper divisors (23468113260770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21120103223230 is a wasteful number, since it uses less digits than its factorization.

21120103223230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12584570 (or 12584559 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21120103223230 its reverse (3232230102112), we get a palindrome (24352333325342).

The spelling of 21120103223230 in words is "twenty-one trillion, one hundred twenty billion, one hundred three million, two hundred twenty-three thousand, two hundred thirty".