100020111197 has 4 divisors (see below), whose sum is σ = 100057476636. Its totient is φ = 99982745760.

The previous prime is 100020111181. The next prime is 100020111211. The reversal of 100020111197 is 791111020001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1531469956 + 98488641241 = 39134^2 + 313829^2 .

It is a cyclic number.

It is not a de Polignac number, because 100020111197 - 2⁴ = 100020111181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100020111497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18678704 + ... + 18684057.

It is an arithmetic number, because the mean of its divisors is an integer number (25014369159).

Almost surely, 2^100020111197 is an apocalyptic number.

It is an amenable number.

100020111197 is a deficient number, since it is larger than the sum of its proper divisors (37365439).

100020111197 is an equidigital number, since it uses as much as digits as its factorization.

100020111197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37365438.

The product of its (nonzero) digits is 126, while the sum is 23.

Adding to 100020111197 its reverse (791111020001), we get a palindrome (891131131198).

The spelling of 100020111197 in words is "one hundred billion, twenty million, one hundred eleven thousand, one hundred ninety-seven".