21120112202 has 48 divisors (see below), whose sum is σ = 38089410048. Its totient is φ = 8748401760.

The previous prime is 21120112201. The next prime is 21120112217. The reversal of 21120112202 is 20221102112.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (21120112201) 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 23 ways as a sum of consecutive naturals, for example, 2660363 + ... + 2668289.

It is an arithmetic number, because the mean of its divisors is an integer number (793529376).

Almost surely, 2^21120112202 is an apocalyptic number.

21120112202 is a deficient number, since it is larger than the sum of its proper divisors (16969297846).

21120112202 is a wasteful number, since it uses less digits than its factorization.

21120112202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8851 (or 8844 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21120112202 its reverse (20221102112), we get a palindrome (41341214314).

The spelling of 21120112202 in words is "twenty-one billion, one hundred twenty million, one hundred twelve thousand, two hundred two".