11112121099973 has 2 divisors, whose sum is σ = 11112121099974. Its totient is φ = 11112121099972.

The previous prime is 11112121099951. The next prime is 11112121099979. The reversal of 11112121099973 is 37999012121111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10953763264609 + 158357835364 = 3309647^2 + 397942^2 .

It is a cyclic number.

It is not a de Polignac number, because 11112121099973 - 2¹⁶ = 11112121034437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11112121099979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5556060549986 + 5556060549987.

It is an arithmetic number, because the mean of its divisors is an integer number (5556060549987).

Almost surely, 2^{11112121099973} is an apocalyptic number.

It is an amenable number.

11112121099973 is a deficient number, since it is larger than the sum of its proper divisors (1).

11112121099973 is an equidigital number, since it uses as much as digits as its factorization.

11112121099973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61236, while the sum is 47.

The spelling of 11112121099973 in words is "eleven trillion, one hundred twelve billion, one hundred twenty-one million, ninety-nine thousand, nine hundred seventy-three".