111020132121209 has 2 divisors, whose sum is σ = 111020132121210. Its totient is φ = 111020132121208.

The previous prime is 111020132121179. The next prime is 111020132121247. The reversal of 111020132121209 is 902121231020111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106857703840000 + 4162428281209 = 10337200^2 + 2040203^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111020132121209 is a prime.

It is not a weakly prime, because it can be changed into another prime (111020132121259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55510066060604 + 55510066060605.

It is an arithmetic number, because the mean of its divisors is an integer number (55510066060605).

Almost surely, 2^{111020132121209} is an apocalyptic number.

It is an amenable number.

111020132121209 is a deficient number, since it is larger than the sum of its proper divisors (1).

111020132121209 is an equidigital number, since it uses as much as digits as its factorization.

111020132121209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 26.

The spelling of 111020132121209 in words is "one hundred eleven trillion, twenty billion, one hundred thirty-two million, one hundred twenty-one thousand, two hundred nine".