100121102197 has 2 divisors, whose sum is σ = 100121102198. Its totient is φ = 100121102196.

The previous prime is 100121102173. The next prime is 100121102209. The reversal of 100121102197 is 791201121001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98989519876 + 1131582321 = 314626^2 + 33639^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100121102197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100121132197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50060551098 + 50060551099.

It is an arithmetic number, because the mean of its divisors is an integer number (50060551099).

Almost surely, 2^100121102197 is an apocalyptic number.

It is an amenable number.

100121102197 is a deficient number, since it is larger than the sum of its proper divisors (1).

100121102197 is an equidigital number, since it uses as much as digits as its factorization.

100121102197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 25.

Adding to 100121102197 its reverse (791201121001), we get a palindrome (891322223198).

The spelling of 100121102197 in words is "one hundred billion, one hundred twenty-one million, one hundred two thousand, one hundred ninety-seven".