11121020031109 has 2 divisors, whose sum is σ = 11121020031110. Its totient is φ = 11121020031108.

The previous prime is 11121020031029. The next prime is 11121020031151. The reversal of 11121020031109 is 90113002012111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7513508602084 + 3607511429025 = 2741078^2 + 1899345^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11121020031109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11121020031109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11121020031509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5560510015554 + 5560510015555.

It is an arithmetic number, because the mean of its divisors is an integer number (5560510015555).

Almost surely, 2^{11121020031109} is an apocalyptic number.

It is an amenable number.

11121020031109 is a deficient number, since it is larger than the sum of its proper divisors (1).

11121020031109 is an equidigital number, since it uses as much as digits as its factorization.

11121020031109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 22.

The spelling of 11121020031109 in words is "eleven trillion, one hundred twenty-one billion, twenty million, thirty-one thousand, one hundred nine".