122200021001221 has 4 divisors (see below), whose sum is σ = 122200252831852. Its totient is φ = 122199789170592.

The previous prime is 122200021001207. The next prime is 122200021001237. The reversal of 122200021001221 is 122100120002221.

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 20000841172900 + 102199179828321 = 4472230^2 + 10109361^2 .

It is a cyclic number.

It is not a de Polignac number, because 122200021001221 - 2⁵ = 122200021001189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122200021001195 and 122200021001204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122200021001921) 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, 115122846 + ... + 116179471.

It is an arithmetic number, because the mean of its divisors is an integer number (30550063207963).

Almost surely, 2^{122200021001221} is an apocalyptic number.

It is an amenable number.

122200021001221 is a deficient number, since it is larger than the sum of its proper divisors (231830631).

122200021001221 is an equidigital number, since it uses as much as digits as its factorization.

122200021001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231830630.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 122200021001221 its reverse (122100120002221), we get a palindrome (244300141003442).

The spelling of 122200021001221 in words is "one hundred twenty-two trillion, two hundred billion, twenty-one million, one thousand, two hundred twenty-one".