221122022210221 has 32 divisors (see below), whose sum is σ = 258404477760000. Its totient is φ = 187081198032960.

The previous prime is 221122022210209. The next prime is 221122022210237. The reversal of 221122022210221 is 122012220221122.

It is not a de Polignac number, because 221122022210221 - 2³³ = 221113432275629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221122022210192 and 221122022210201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221122022210281) 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, 11346610 + ... + 23895388.

It is an arithmetic number, because the mean of its divisors is an integer number (8075139930000).

Almost surely, 2^{221122022210221} is an apocalyptic number.

It is an amenable number.

221122022210221 is a deficient number, since it is larger than the sum of its proper divisors (37282455549779).

221122022210221 is a wasteful number, since it uses less digits than its factorization.

221122022210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12550297.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 221122022210221 its reverse (122012220221122), we get a palindrome (343134242431343).

The spelling of 221122022210221 in words is "two hundred twenty-one trillion, one hundred twenty-two billion, twenty-two million, two hundred ten thousand, two hundred twenty-one".