1201221122201 has 4 divisors (see below), whose sum is σ = 1204567142400. Its totient is φ = 1197875102004.

The previous prime is 1201221122161. The next prime is 1201221122243. The reversal of 1201221122201 is 1022211221021.

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 a de Polignac number, because none of the positive numbers 2^k-1201221122201 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 1201221122201.

It is not an unprimeable number, because it can be changed into a prime (1201221122501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1673009561 + ... + 1673010278.

It is an arithmetic number, because the mean of its divisors is an integer number (301141785600).

Almost surely, 2^{1201221122201} is an apocalyptic number.

It is an amenable number.

1201221122201 is a deficient number, since it is larger than the sum of its proper divisors (3346020199).

1201221122201 is an equidigital number, since it uses as much as digits as its factorization.

1201221122201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3346020198.

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

Adding to 1201221122201 its reverse (1022211221021), we get a palindrome (2223432343222).

The spelling of 1201221122201 in words is "one trillion, two hundred one billion, two hundred twenty-one million, one hundred twenty-two thousand, two hundred one".