101121101091 has 6 divisors (see below), whose sum is σ = 146063812700. Its totient is φ = 67414067388.

The previous prime is 101121101087. The next prime is 101121101101. The reversal of 101121101091 is 190101121101.

It is not a de Polignac number, because 101121101091 - 2² = 101121101087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101121101021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5617838941 + ... + 5617838958.

Almost surely, 2^101121101091 is an apocalyptic number.

101121101091 is a deficient number, since it is larger than the sum of its proper divisors (44942711609).

101121101091 is a wasteful number, since it uses less digits than its factorization.

101121101091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11235677905 (or 11235677902 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 18.

Adding to 101121101091 its reverse (190101121101), we get a palindrome (291222222192).

The spelling of 101121101091 in words is "one hundred one billion, one hundred twenty-one million, one hundred one thousand, ninety-one".