221022210020121 has 64 divisors (see below), whose sum is σ = 329071943692800. Its totient is φ = 146615905481472.

The previous prime is 221022210020099. The next prime is 221022210020123. The reversal of 221022210020121 is 121020012220122.

It is a happy number.

221022210020121 is a `hidden beast` number, since 2 + 210 + 22 + 210 + 0 + 201 + 21 = 666.

It is not a de Polignac number, because 221022210020121 - 2⁵ = 221022210020089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221022210020094 and 221022210020103.

It is not an unprimeable number, because it can be changed into a prime (221022210020123) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 28231214635 + ... + 28231222463.

It is an arithmetic number, because the mean of its divisors is an integer number (5141749120200).

Almost surely, 2^{221022210020121} is an apocalyptic number.

It is an amenable number.

221022210020121 is a deficient number, since it is larger than the sum of its proper divisors (108049733672679).

221022210020121 is a wasteful number, since it uses less digits than its factorization.

221022210020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14287 (or 14281 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 221022210020121 its reverse (121020012220122), we get a palindrome (342042222240243).

The spelling of 221022210020121 in words is "two hundred twenty-one trillion, twenty-two billion, two hundred ten million, twenty thousand, one hundred twenty-one".