122222201221221 has 8 divisors (see below), whose sum is σ = 164793979175040. Its totient is φ = 80565945374112.

The previous prime is 122222201221193. The next prime is 122222201221249. The reversal of 122222201221221 is 122122102222221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (122222201221193) and next prime (122222201221249).

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

It is not a de Polignac number, because 122222201221221 - 2⁷ = 122222201221093 is a prime.

It is a super-2 number, since 2×122222201221221² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122222201221191 and 122222201221200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122222201221261) 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, 228880526365 + ... + 228880526898.

It is an arithmetic number, because the mean of its divisors is an integer number (20599247396880).

Almost surely, 2^{122222201221221} is an apocalyptic number.

It is an amenable number.

122222201221221 is a deficient number, since it is larger than the sum of its proper divisors (42571777953819).

122222201221221 is an equidigital number, since it uses as much as digits as its factorization.

122222201221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457761053355.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 122222201221221 its reverse (122122102222221), we get a palindrome (244344303443442).

The spelling of 122222201221221 in words is "one hundred twenty-two trillion, two hundred twenty-two billion, two hundred one million, two hundred twenty-one thousand, two hundred twenty-one".