10021220011191 has 16 divisors (see below), whose sum is σ = 13383678337920. Its totient is φ = 6669790206240.

The previous prime is 10021220011183. The next prime is 10021220011223. The reversal of 10021220011191 is 19111002212001.

It is not a de Polignac number, because 10021220011191 - 2³ = 10021220011183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021220011151) 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 15 ways as a sum of consecutive naturals, for example, 14734156 + ... + 15399278.

It is an arithmetic number, because the mean of its divisors is an integer number (836479896120).

Almost surely, 2^{10021220011191} is an apocalyptic number.

10021220011191 is a deficient number, since it is larger than the sum of its proper divisors (3362458326729).

10021220011191 is an equidigital number, since it uses as much as digits as its factorization.

10021220011191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673406.

The product of its (nonzero) digits is 72, while the sum is 21.

Adding to 10021220011191 its reverse (19111002212001), we get a palindrome (29132222223192).

The spelling of 10021220011191 in words is "ten trillion, twenty-one billion, two hundred twenty million, eleven thousand, one hundred ninety-one".