21220002112210 has 64 divisors (see below), whose sum is σ = 41703902714880. Its totient is φ = 7709785836480.

The previous prime is 21220002112187. The next prime is 21220002112213. The reversal of 21220002112210 is 1221120002212.

It is a happy number.

It is a super-2 number, since 2×21220002112210² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21220002112213) 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 31 ways as a sum of consecutive naturals, for example, 1546302409 + ... + 1546316131.

It is an arithmetic number, because the mean of its divisors is an integer number (651623479920).

Almost surely, 2^{21220002112210} is an apocalyptic number.

21220002112210 is a deficient number, since it is larger than the sum of its proper divisors (20483900602670).

21220002112210 is a wasteful number, since it uses less digits than its factorization.

21220002112210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24703.

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

Adding to 21220002112210 its reverse (1221120002212), we get a palindrome (22441122114422).

The spelling of 21220002112210 in words is "twenty-one trillion, two hundred twenty billion, two million, one hundred twelve thousand, two hundred ten".