122201020122121 has 4 divisors (see below), whose sum is σ = 122563634425492. Its totient is φ = 121838405818752.

The previous prime is 122201020122101. The next prime is 122201020122149. The reversal of 122201020122121 is 121221020102221.

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 35694948975625 + 86506071146496 = 5974525^2 + 9300864^2 .

It is a cyclic number.

It is not a de Polignac number, because 122201020122121 - 2⁴³ = 113404927099913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122201020122101) 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, 181307151180 + ... + 181307151853.

It is an arithmetic number, because the mean of its divisors is an integer number (30640908606373).

Almost surely, 2^{122201020122121} is an apocalyptic number.

It is an amenable number.

122201020122121 is a deficient number, since it is larger than the sum of its proper divisors (362614303371).

122201020122121 is an equidigital number, since it uses as much as digits as its factorization.

122201020122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362614303370.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 122201020122121 its reverse (121221020102221), we get a palindrome (243422040224342).

The spelling of 122201020122121 in words is "one hundred twenty-two trillion, two hundred one billion, twenty million, one hundred twenty-two thousand, one hundred twenty-one".