100121311097 has 8 divisors (see below), whose sum is σ = 102843759816. Its totient is φ = 97399729152.

The previous prime is 100121311093. The next prime is 100121311127. The reversal of 100121311097 is 790113121001.

It can be written as a sum of positive squares in 4 ways, for example, as 27981260176 + 72140050921 = 167276^2 + 268589^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100121311097 - 2² = 100121311093 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100121311093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20963 + ... + 447975.

It is an arithmetic number, because the mean of its divisors is an integer number (12855469977).

Almost surely, 2^100121311097 is an apocalyptic number.

It is an amenable number.

100121311097 is a deficient number, since it is larger than the sum of its proper divisors (2722448719).

100121311097 is an equidigital number, since it uses as much as digits as its factorization.

100121311097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433387.

The product of its (nonzero) digits is 378, while the sum is 26.

Adding to 100121311097 its reverse (790113121001), we get a palindrome (890234432098).

The spelling of 100121311097 in words is "one hundred billion, one hundred twenty-one million, three hundred eleven thousand, ninety-seven".