121222101020201 has 8 divisors (see below), whose sum is σ = 121236566925000. Its totient is φ = 121207636006272.

The previous prime is 121222101020177. The next prime is 121222101020233. The reversal of 121222101020201 is 102020101222121.

It can be written as a sum of positive squares in 4 ways, for example, as 29680758480025 + 91541342540176 = 5448005^2 + 9567724^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121222101020201 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 121222101020201.

It is not an unprimeable number, because it can be changed into a prime (121222101020281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 294772541 + ... + 295183493.

It is an arithmetic number, because the mean of its divisors is an integer number (15154570865625).

Almost surely, 2^{121222101020201} is an apocalyptic number.

It is an amenable number.

121222101020201 is a deficient number, since it is larger than the sum of its proper divisors (14465904799).

121222101020201 is a wasteful number, since it uses less digits than its factorization.

121222101020201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445435.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121222101020201 its reverse (102020101222121), we get a palindrome (223242202242322).

The spelling of 121222101020201 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, one hundred one million, twenty thousand, two hundred one".