21002112010222 has 64 divisors (see below), whose sum is σ = 36808058087424. Its totient is φ = 8800201532160.

The previous prime is 21002112010211. The next prime is 21002112010223. The reversal of 21002112010222 is 22201021120012.

It is a happy number.

It is a super-2 number, since 2×21002112010222² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21002112010196 and 21002112010205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002112010223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4257470068 + ... + 4257475000.

It is an arithmetic number, because the mean of its divisors is an integer number (575125907616).

Almost surely, 2^{21002112010222} is an apocalyptic number.

21002112010222 is a deficient number, since it is larger than the sum of its proper divisors (15805946077202).

21002112010222 is a wasteful number, since it uses less digits than its factorization.

21002112010222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10433.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21002112010222 its reverse (22201021120012), we get a palindrome (43203133130234).

The spelling of 21002112010222 in words is "twenty-one trillion, two billion, one hundred twelve million, ten thousand, two hundred twenty-two".