10221101011091 has 4 divisors (see below), whose sum is σ = 10221493718400. Its totient is φ = 10220708303784.

The previous prime is 10221101011073. The next prime is 10221101011217. The reversal of 10221101011091 is 19011010112201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10221101011091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10221101010091) 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, 196314611 + ... + 196366668.

It is an arithmetic number, because the mean of its divisors is an integer number (2555373429600).

Almost surely, 2^{10221101011091} is an apocalyptic number.

10221101011091 is a deficient number, since it is larger than the sum of its proper divisors (392707309).

10221101011091 is an equidigital number, since it uses as much as digits as its factorization.

10221101011091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392707308.

The product of its (nonzero) digits is 36, while the sum is 20.

Adding to 10221101011091 its reverse (19011010112201), we get a palindrome (29232111123292).

The spelling of 10221101011091 in words is "ten trillion, two hundred twenty-one billion, one hundred one million, eleven thousand, ninety-one".