100120199998997 has 2 divisors, whose sum is σ = 100120199998998. Its totient is φ = 100120199998996.

The previous prime is 100120199998993. The next prime is 100120199999011. The reversal of 100120199998997 is 799899991021001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71294532944881 + 28825667054116 = 8443609^2 + 5368954^2 .

It is a cyclic number.

It is not a de Polignac number, because 100120199998997 - 2² = 100120199998993 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100120199998993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50060099999498 + 50060099999499.

It is an arithmetic number, because the mean of its divisors is an integer number (50060099999499).

Almost surely, 2^{100120199998997} is an apocalyptic number.

It is an amenable number.

100120199998997 is a deficient number, since it is larger than the sum of its proper divisors (1).

100120199998997 is an equidigital number, since it uses as much as digits as its factorization.

100120199998997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 59521392, while the sum is 74.

The spelling of 100120199998997 in words is "one hundred trillion, one hundred twenty billion, one hundred ninety-nine million, nine hundred ninety-eight thousand, nine hundred ninety-seven".