100122121097 has 2 divisors, whose sum is σ = 100122121098. Its totient is φ = 100122121096.

The previous prime is 100122121093. The next prime is 100122121111. The reversal of 100122121097 is 790121221001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99545929081 + 576192016 = 315509^2 + 24004^2 .

It is a cyclic number.

It is not a de Polignac number, because 100122121097 - 2² = 100122121093 is a prime.

It is not a weakly prime, because it can be changed into another prime (100122121091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50061060548 + 50061060549.

It is an arithmetic number, because the mean of its divisors is an integer number (50061060549).

Almost surely, 2^100122121097 is an apocalyptic number.

It is an amenable number.

100122121097 is a deficient number, since it is larger than the sum of its proper divisors (1).

100122121097 is an equidigital number, since it uses as much as digits as its factorization.

100122121097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 26.

Adding to 100122121097 its reverse (790121221001), we get a palindrome (890243342098).

The spelling of 100122121097 in words is "one hundred billion, one hundred twenty-two million, one hundred twenty-one thousand, ninety-seven".