22210101221 has 16 divisors (see below), whose sum is σ = 27696577920. Its totient is φ = 17302783680.

The previous prime is 22210101169. The next prime is 22210101227. The reversal of 22210101221 is 12210101222.

It is not a de Polignac number, because 22210101221 - 2⁶ = 22210101157 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22210101196 and 22210101205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22210101227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 352595 + ... + 410783.

It is an arithmetic number, because the mean of its divisors is an integer number (1731036120).

Almost surely, 2^22210101221 is an apocalyptic number.

It is an amenable number.

22210101221 is a deficient number, since it is larger than the sum of its proper divisors (5486476699).

22210101221 is a wasteful number, since it uses less digits than its factorization.

22210101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63164.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22210101221 its reverse (12210101222), we get a palindrome (34420202443).

Subtracting from 22210101221 its reverse (12210101222), we obtain a palindrome (9999999999).

The spelling of 22210101221 in words is "twenty-two billion, two hundred ten million, one hundred one thousand, two hundred twenty-one".