20112112000997 has 2 divisors, whose sum is σ = 20112112000998. Its totient is φ = 20112112000996.

The previous prime is 20112112000993. The next prime is 20112112001017. The reversal of 20112112000997 is 79900021121102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11337726059716 + 8774385941281 = 3367154^2 + 2962159^2 .

It is a cyclic number.

It is not a de Polignac number, because 20112112000997 - 2² = 20112112000993 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20112112000993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056056000498 + 10056056000499.

It is an arithmetic number, because the mean of its divisors is an integer number (10056056000499).

Almost surely, 2^{20112112000997} is an apocalyptic number.

It is an amenable number.

20112112000997 is a deficient number, since it is larger than the sum of its proper divisors (1).

20112112000997 is an equidigital number, since it uses as much as digits as its factorization.

20112112000997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 35.

The spelling of 20112112000997 in words is "twenty trillion, one hundred twelve billion, one hundred twelve million, nine hundred ninety-seven", and thus it is an aban number.