122101211102221 has 8 divisors (see below), whose sum is σ = 131496191532440. Its totient is φ = 112706599182912.

The previous prime is 122101211102113. The next prime is 122101211102261. The reversal of 122101211102221 is 122201112101221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9725734569321 + 112375476532900 = 3118611^2 + 10600730^2 .

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 122101211102221 - 2¹⁷ = 122101210971149 is a prime.

It is a super-2 number, since 2×122101211102221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122101211102261) 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, 91439370 + ... + 92765083.

It is an arithmetic number, because the mean of its divisors is an integer number (16437023941555).

Almost surely, 2^{122101211102221} is an apocalyptic number.

It is an amenable number.

122101211102221 is a deficient number, since it is larger than the sum of its proper divisors (9394980430219).

122101211102221 is a wasteful number, since it uses less digits than its factorization.

122101211102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184255455.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 122101211102221 its reverse (122201112101221), we get a palindrome (244302323203442).

The spelling of 122101211102221 in words is "one hundred twenty-two trillion, one hundred one billion, two hundred eleven million, one hundred two thousand, two hundred twenty-one".