100111110021497 has 2 divisors, whose sum is σ = 100111110021498. Its totient is φ = 100111110021496.

The previous prime is 100111110021473. The next prime is 100111110021551. The reversal of 100111110021497 is 794120011111001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64308466793536 + 35802643227961 = 8019256^2 + 5983531^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100111110021497 is a prime.

It is not a weakly prime, because it can be changed into another prime (100111110521497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50055555010748 + 50055555010749.

It is an arithmetic number, because the mean of its divisors is an integer number (50055555010749).

Almost surely, 2^{100111110021497} is an apocalyptic number.

It is an amenable number.

100111110021497 is a deficient number, since it is larger than the sum of its proper divisors (1).

100111110021497 is an equidigital number, since it uses as much as digits as its factorization.

100111110021497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 29.

Adding to 100111110021497 its reverse (794120011111001), we get a palindrome (894231121132498).

The spelling of 100111110021497 in words is "one hundred trillion, one hundred eleven billion, one hundred ten million, twenty-one thousand, four hundred ninety-seven".