221222122201 has 8 divisors (see below), whose sum is σ = 222832713600. Its totient is φ = 219611803440.

The previous prime is 221222122193. The next prime is 221222122207. The reversal of 221222122201 is 102221222122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221222122201 - 2³ = 221222122193 is a prime.

It is a super-2 number, since 2×221222122201² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221222122207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1732995 + ... + 1856263.

It is an arithmetic number, because the mean of its divisors is an integer number (27854089200).

Almost surely, 2^221222122201 is an apocalyptic number.

It is an amenable number.

221222122201 is a deficient number, since it is larger than the sum of its proper divisors (1610591399).

221222122201 is a wasteful number, since it uses less digits than its factorization.

221222122201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136319.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 221222122201 its reverse (102221222122), we get a palindrome (323443344323).

The spelling of 221222122201 in words is "two hundred twenty-one billion, two hundred twenty-two million, one hundred twenty-two thousand, two hundred one".