10820001091 has 8 divisors (see below), whose sum is σ = 11116833840. Its totient is φ = 10526949888.

The previous prime is 10820001061. The next prime is 10820001103. The reversal of 10820001091 is 19010002801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10820001091 - 2²⁵ = 10786446659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10820001061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 939586 + ... + 951031.

It is an arithmetic number, because the mean of its divisors is an integer number (1389604230).

Almost surely, 2^10820001091 is an apocalyptic number.

10820001091 is a deficient number, since it is larger than the sum of its proper divisors (296832749).

10820001091 is an equidigital number, since it uses as much as digits as its factorization.

10820001091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1890773.

The product of its (nonzero) digits is 144, while the sum is 22.

Adding to 10820001091 its reverse (19010002801), we get a palindrome (29830003892).

The spelling of 10820001091 in words is "ten billion, eight hundred twenty million, one thousand, ninety-one".