112121210309 has 2 divisors, whose sum is σ = 112121210310. Its totient is φ = 112121210308.

The previous prime is 112121210269. The next prime is 112121210329. The reversal of 112121210309 is 903012121211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101094110209 + 11027100100 = 317953^2 + 105010^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112121210309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112121210329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56060605154 + 56060605155.

It is an arithmetic number, because the mean of its divisors is an integer number (56060605155).

Almost surely, 2^112121210309 is an apocalyptic number.

It is an amenable number.

112121210309 is a deficient number, since it is larger than the sum of its proper divisors (1).

112121210309 is an equidigital number, since it uses as much as digits as its factorization.

112121210309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 112121210309 in words is "one hundred twelve billion, one hundred twenty-one million, two hundred ten thousand, three hundred nine".