122211120110221 has 4 divisors (see below), whose sum is σ = 122211150824412. Its totient is φ = 122211089396032.

The previous prime is 122211120110201. The next prime is 122211120110237. The reversal of 122211120110221 is 122011021112221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 68122655786025 + 54088464324196 = 8253645^2 + 7354486^2 .

It is a cyclic number.

It is not a de Polignac number, because 122211120110221 - 2²⁷ = 122210985892493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122211120110201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8311006 + ... + 17705791.

It is an arithmetic number, because the mean of its divisors is an integer number (30552787706103).

Almost surely, 2^{122211120110221} is an apocalyptic number.

It is an amenable number.

122211120110221 is a deficient number, since it is larger than the sum of its proper divisors (30714191).

122211120110221 is an equidigital number, since it uses as much as digits as its factorization.

122211120110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30714190.

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

Adding to 122211120110221 its reverse (122011021112221), we get a palindrome (244222141222442).

The spelling of 122211120110221 in words is "one hundred twenty-two trillion, two hundred eleven billion, one hundred twenty million, one hundred ten thousand, two hundred twenty-one".