1113221292121 has 2 divisors, whose sum is σ = 1113221292122. Its totient is φ = 1113221292120.

The previous prime is 1113221292083. The next prime is 1113221292133. The reversal of 1113221292121 is 1212921223111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 858661689600 + 254559602521 = 926640^2 + 504539^2 .

It is a cyclic number.

It is not a de Polignac number, because 1113221292121 - 2⁷ = 1113221291993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1113221292121.

It is not a weakly prime, because it can be changed into another prime (1113221292151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556610646060 + 556610646061.

It is an arithmetic number, because the mean of its divisors is an integer number (556610646061).

Almost surely, 2^{1113221292121} is an apocalyptic number.

It is an amenable number.

1113221292121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113221292121 is an equidigital number, since it uses as much as digits as its factorization.

1113221292121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 28.

The spelling of 1113221292121 in words is "one trillion, one hundred thirteen billion, two hundred twenty-one million, two hundred ninety-two thousand, one hundred twenty-one".