21201112130 has 16 divisors (see below), whose sum is σ = 41631274944. Its totient is φ = 7709495280.

The previous prime is 21201112087. The next prime is 21201112139. The reversal of 21201112130 is 3121110212.

It is not an unprimeable number, because it can be changed into a prime (21201112139) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 96368582 + ... + 96368801.

It is an arithmetic number, because the mean of its divisors is an integer number (2601954684).

Almost surely, 2^21201112130 is an apocalyptic number.

21201112130 is a deficient number, since it is larger than the sum of its proper divisors (20430162814).

21201112130 is a wasteful number, since it uses less digits than its factorization.

21201112130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192737401.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 21201112130 its reverse (3121110212), we get a palindrome (24322222342).

It can be divided in two parts, 21201 and 112130, that added together give a palindrome (133331).

The spelling of 21201112130 in words is "twenty-one billion, two hundred one million, one hundred twelve thousand, one hundred thirty".