122201201121221 has 4 divisors (see below), whose sum is σ = 122201296068192. Its totient is φ = 122201106174252.

The previous prime is 122201201121211. The next prime is 122201201121247. The reversal of 122201201121221 is 122121102102221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 122201201121221 - 2⁶ = 122201201121157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 122201201121193 and 122201201121202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122201201121211) 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, 45516011 + ... + 48125976.

It is an arithmetic number, because the mean of its divisors is an integer number (30550324017048).

Almost surely, 2^{122201201121221} is an apocalyptic number.

It is an amenable number.

122201201121221 is a deficient number, since it is larger than the sum of its proper divisors (94946971).

122201201121221 is an equidigital number, since it uses as much as digits as its factorization.

122201201121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94946970.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 122201201121221 its reverse (122121102102221), we get a palindrome (244322303223442).

The spelling of 122201201121221 in words is "one hundred twenty-two trillion, two hundred one billion, two hundred one million, one hundred twenty-one thousand, two hundred twenty-one".