101112220091 has 16 divisors (see below), whose sum is σ = 105466168800. Its totient is φ = 96819437568.

The previous prime is 101112220087. The next prime is 101112220141. The reversal of 101112220091 is 190022211101.

It is a cyclic number.

It is not a de Polignac number, because 101112220091 - 2² = 101112220087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101112220081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1677116 + ... + 1736358.

It is an arithmetic number, because the mean of its divisors is an integer number (6591635550).

Almost surely, 2^101112220091 is an apocalyptic number.

101112220091 is a deficient number, since it is larger than the sum of its proper divisors (4353948709).

101112220091 is a wasteful number, since it uses less digits than its factorization.

101112220091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59758.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 101112220091 its reverse (190022211101), we get a palindrome (291134431192).

The spelling of 101112220091 in words is "one hundred one billion, one hundred twelve million, two hundred twenty thousand, ninety-one".