1121121121001 has 4 divisors (see below), whose sum is σ = 1281281281152. Its totient is φ = 960960960852.

The previous prime is 1121121120989. The next prime is 1121121121007. The reversal of 1121121121001 is 1001211211211.

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 not a de Polignac number, because 1121121121001 - 2¹⁸ = 1121120858857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121121121007) 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, 80080080065 + ... + 80080080078.

It is an arithmetic number, because the mean of its divisors is an integer number (320320320288).

Almost surely, 2^{1121121121001} is an apocalyptic number.

It is an amenable number.

1121121121001 is a deficient number, since it is larger than the sum of its proper divisors (160160160151).

1121121121001 is an equidigital number, since it uses as much as digits as its factorization.

1121121121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160160160150.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1121121121001 its reverse (1001211211211), we get a palindrome (2122332332212).

The spelling of 1121121121001 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-one million, one hundred twenty-one thousand, one".