122211010111221 has 16 divisors (see below), whose sum is σ = 181444392280320. Its totient is φ = 81298036955520.

The previous prime is 122211010111207. The next prime is 122211010111231. The reversal of 122211010111221 is 122111010112221.

It is a happy number.

122211010111221 is a `hidden beast` number, since 1 + 222 + 110 + 1 + 0 + 111 + 221 = 666.

It is not a de Polignac number, because 122211010111221 - 2¹⁴ = 122211010094837 is a prime.

It is a super-2 number, since 2×122211010111221² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122211010111194 and 122211010111203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122211010111231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4888036860 + ... + 4888061861.

It is an arithmetic number, because the mean of its divisors is an integer number (11340274517520).

Almost surely, 2^{122211010111221} is an apocalyptic number.

It is an amenable number.

122211010111221 is a deficient number, since it is larger than the sum of its proper divisors (59233382169099).

122211010111221 is an equidigital number, since it uses as much as digits as its factorization.

122211010111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9776099193 (or 9776099187 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 122211010111221 its reverse (122111010112221), we get a palindrome (244322020223442).

The spelling of 122211010111221 in words is "one hundred twenty-two trillion, two hundred eleven billion, ten million, one hundred eleven thousand, two hundred twenty-one".