101111112205 has 4 divisors (see below), whose sum is σ = 121333334652. Its totient is φ = 80888889760.

The previous prime is 101111112203. The next prime is 101111112209. The reversal of 101111112205 is 502211111101.

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 30757793641 + 70353318564 = 175379^2 + 265242^2 .

It is not a de Polignac number, because 101111112205 - 2¹ = 101111112203 is a prime.

It is a super-2 number, since 2×101111112205² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101111112203) 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, 10111111216 + ... + 10111111225.

It is an arithmetic number, because the mean of its divisors is an integer number (30333333663).

Almost surely, 2^101111112205 is an apocalyptic number.

It is an amenable number.

101111112205 is a deficient number, since it is larger than the sum of its proper divisors (20222222447).

101111112205 is an equidigital number, since it uses as much as digits as its factorization.

101111112205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20222222446.

The product of its (nonzero) digits is 20, while the sum is 16.

Adding to 101111112205 its reverse (502211111101), we get a palindrome (603322223306).

The spelling of 101111112205 in words is "one hundred one billion, one hundred eleven million, one hundred twelve thousand, two hundred five".