1121202120121 has 2 divisors, whose sum is σ = 1121202120122. Its totient is φ = 1121202120120.

The previous prime is 1121202120107. The next prime is 1121202120133. The reversal of 1121202120121 is 1210212021211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 915935132025 + 205266988096 = 957045^2 + 453064^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121202120121 - 2⁵ = 1121202120089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121202120095 and 1121202120104.

It is not a weakly prime, because it can be changed into another prime (1121202120721) 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 as a sum of consecutive naturals, namely, 560601060060 + 560601060061.

It is an arithmetic number, because the mean of its divisors is an integer number (560601060061).

Almost surely, 2^{1121202120121} is an apocalyptic number.

It is an amenable number.

1121202120121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121202120121 is an equidigital number, since it uses as much as digits as its factorization.

1121202120121 is an odious number, because the sum of its binary digits is odd.

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

Adding to 1121202120121 its reverse (1210212021211), we get a palindrome (2331414141332).

The spelling of 1121202120121 in words is "one trillion, one hundred twenty-one billion, two hundred two million, one hundred twenty thousand, one hundred twenty-one".