101040221099 has 4 divisors (see below), whose sum is σ = 101084675736. Its totient is φ = 100995766464.

The previous prime is 101040221033. The next prime is 101040221147. The reversal of 101040221099 is 990122040101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 990122040101 = 7727 ⋅128137963.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101040221099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101040221899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22223909 + ... + 22228454.

It is an arithmetic number, because the mean of its divisors is an integer number (25271168934).

Almost surely, 2^101040221099 is an apocalyptic number.

101040221099 is a deficient number, since it is larger than the sum of its proper divisors (44454637).

101040221099 is an equidigital number, since it uses as much as digits as its factorization.

101040221099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44454636.

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 101040221099 in words is "one hundred one billion, forty million, two hundred twenty-one thousand, ninety-nine".