1121221000201 has 8 divisors (see below), whose sum is σ = 1130040408744. Its totient is φ = 1112435842560.

The previous prime is 1121221000171. The next prime is 1121221000283. The reversal of 1121221000201 is 1020001221211.

It can be written as a sum of positive squares in 4 ways, for example, as 407070976 + 1120813929225 = 20176^2 + 1058685^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1121221000201 - 2⁵ = 1121221000169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121221009201) 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, 8496996 + ... + 8627941.

It is an arithmetic number, because the mean of its divisors is an integer number (141255051093).

Almost surely, 2^{1121221000201} is an apocalyptic number.

It is an amenable number.

1121221000201 is a deficient number, since it is larger than the sum of its proper divisors (8819408543).

1121221000201 is a wasteful number, since it uses less digits than its factorization.

1121221000201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17125451.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1121221000201 its reverse (1020001221211), we get a palindrome (2141222221412).

The spelling of 1121221000201 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-one million, two hundred one", and thus it is an aban number.