122202021221 has 8 divisors (see below), whose sum is σ = 139679922624. Its totient is φ = 104729237280.

The previous prime is 122202021191. The next prime is 122202021239. The reversal of 122202021221 is 122120202221.

It is a happy number.

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 122202021221 - 2¹⁰ = 122202020197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122202021221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122202024221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1228055 + ... + 1323828.

It is an arithmetic number, because the mean of its divisors is an integer number (17459990328).

Almost surely, 2^122202021221 is an apocalyptic number.

It is an amenable number.

122202021221 is a deficient number, since it is larger than the sum of its proper divisors (17477901403).

122202021221 is an equidigital number, since it uses as much as digits as its factorization.

122202021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2558731.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 122202021221 its reverse (122120202221), we get a palindrome (244322223442).

The spelling of 122202021221 in words is "one hundred twenty-two billion, two hundred two million, twenty-one thousand, two hundred twenty-one".