122202221220221 has 16 divisors (see below), whose sum is σ = 129501326026800. Its totient is φ = 115108883904000.

The previous prime is 122202221220217. The next prime is 122202221220223. The reversal of 122202221220221 is 122022122202221.

It can be written as a sum of positive squares in 8 ways, for example, as 8392690116196 + 113809531104025 = 2897014^2 + 10668155^2 .

It is a cyclic number.

It is not a de Polignac number, because 122202221220221 - 2² = 122202221220217 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 (122202221220223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83576495 + ... + 85026083.

It is an arithmetic number, because the mean of its divisors is an integer number (8093832876675).

Almost surely, 2^{122202221220221} is an apocalyptic number.

It is an amenable number.

122202221220221 is a deficient number, since it is larger than the sum of its proper divisors (7299104806579).

122202221220221 is a wasteful number, since it uses less digits than its factorization.

122202221220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520560.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 122202221220221 its reverse (122022122202221), we get a palindrome (244224343422442).

The spelling of 122202221220221 in words is "one hundred twenty-two trillion, two hundred two billion, two hundred twenty-one million, two hundred twenty thousand, two hundred twenty-one".