101001122091 has 12 divisors (see below), whose sum is σ = 147228956160. Its totient is φ = 66716336880.

The previous prime is 101001121909. The next prime is 101001122149. The reversal of 101001122091 is 190221100101.

It is a happy number.

It is not a de Polignac number, because 101001122091 - 2²¹ = 100999024939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101001126091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51477675 + ... + 51479636.

It is an arithmetic number, because the mean of its divisors is an integer number (12269079680).

Almost surely, 2^101001122091 is an apocalyptic number.

101001122091 is a deficient number, since it is larger than the sum of its proper divisors (46227834069).

101001122091 is a wasteful number, since it uses less digits than its factorization.

101001122091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102957426 (or 102957423 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

Adding to 101001122091 its reverse (190221100101), we get a palindrome (291222222192).

The spelling of 101001122091 in words is "one hundred one billion, one million, one hundred twenty-two thousand, ninety-one".