221210010020122 has 32 divisors (see below), whose sum is σ = 346611230279424. Its totient is φ = 105683203718400.

The previous prime is 221210010020093. The next prime is 221210010020141. The reversal of 221210010020122 is 221020010012122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221210010020096 and 221210010020105.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1789938372 + ... + 1790061952.

It is an arithmetic number, because the mean of its divisors is an integer number (10831600946232).

Almost surely, 2^{221210010020122} is an apocalyptic number.

221210010020122 is a deficient number, since it is larger than the sum of its proper divisors (125401220259302).

221210010020122 is a wasteful number, since it uses less digits than its factorization.

221210010020122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164814.

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

Adding to 221210010020122 its reverse (221020010012122), we get a palindrome (442230020032244).

The spelling of 221210010020122 in words is "two hundred twenty-one trillion, two hundred ten billion, ten million, twenty thousand, one hundred twenty-two".