111010020197 has 4 divisors (see below), whose sum is σ = 111011764236. Its totient is φ = 111008276160.

The previous prime is 111010020193. The next prime is 111010020203. The reversal of 111010020197 is 791020010111.

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 71698630756 + 39311389441 = 267766^2 + 198271^2 .

It is a cyclic number.

It is not a de Polignac number, because 111010020197 - 2² = 111010020193 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 (111010020193) 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, 772778 + ... + 905099.

It is an arithmetic number, because the mean of its divisors is an integer number (27752941059).

Almost surely, 2^111010020197 is an apocalyptic number.

It is an amenable number.

111010020197 is a deficient number, since it is larger than the sum of its proper divisors (1744039).

111010020197 is an equidigital number, since it uses as much as digits as its factorization.

111010020197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1744038.

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

The spelling of 111010020197 in words is "one hundred eleven billion, ten million, twenty thousand, one hundred ninety-seven".