20120012122997 has 2 divisors, whose sum is σ = 20120012122998. Its totient is φ = 20120012122996.

The previous prime is 20120012122979. The next prime is 20120012123143. The reversal of 20120012122997 is 79922121002102.

Together with previous prime (20120012122979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14447950694116 + 5672061428881 = 3801046^2 + 2381609^2 .

It is a cyclic number.

It is not a de Polignac number, because 20120012122997 - 2⁸ = 20120012122741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20120012122997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20120012122907) 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, 10060006061498 + 10060006061499.

It is an arithmetic number, because the mean of its divisors is an integer number (10060006061499).

Almost surely, 2^{20120012122997} is an apocalyptic number.

It is an amenable number.

20120012122997 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120012122997 is an equidigital number, since it uses as much as digits as its factorization.

20120012122997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 38.

The spelling of 20120012122997 in words is "twenty trillion, one hundred twenty billion, twelve million, one hundred twenty-two thousand, nine hundred ninety-seven".