1121220220001 has 16 divisors (see below), whose sum is σ = 1284253873920. Its totient is φ = 958902909120.

The previous prime is 1121220219943. The next prime is 1121220220009. The reversal of 1121220220001 is 1000220221211.

It is a cyclic number.

It is not a de Polignac number, because 1121220220001 - 2¹⁰ = 1121220218977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1121220220009) 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 15 ways as a sum of consecutive naturals, for example, 9066140 + ... + 9188978.

It is an arithmetic number, because the mean of its divisors is an integer number (80265867120).

Almost surely, 2^{1121220220001} is an apocalyptic number.

It is an amenable number.

1121220220001 is a deficient number, since it is larger than the sum of its proper divisors (163033653919).

1121220220001 is a wasteful number, since it uses less digits than its factorization.

1121220220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125744.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1121220220001 its reverse (1000220221211), we get a palindrome (2121440441212).

The spelling of 1121220220001 in words is "one trillion, one hundred twenty-one billion, two hundred twenty million, two hundred twenty thousand, one".