121222110201001 has 4 divisors (see below), whose sum is σ = 122294872238292. Its totient is φ = 120149348163712.

The previous prime is 121222110200959. The next prime is 121222110201041. The reversal of 121222110201001 is 100102011222121.

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 23791371969600 + 97430738231401 = 4877640^2 + 9870701^2 .

It is a cyclic number.

It is not a de Polignac number, because 121222110201001 - 2¹¹ = 121222110198953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121222110201041) 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 3 ways as a sum of consecutive naturals, for example, 536381018476 + ... + 536381018701.

It is an arithmetic number, because the mean of its divisors is an integer number (30573718059573).

Almost surely, 2^{121222110201001} is an apocalyptic number.

It is an amenable number.

121222110201001 is a deficient number, since it is larger than the sum of its proper divisors (1072762037291).

121222110201001 is a wasteful number, since it uses less digits than its factorization.

121222110201001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072762037290.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121222110201001 its reverse (100102011222121), we get a palindrome (221324121423122).

The spelling of 121222110201001 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, one hundred ten million, two hundred one thousand, one".