11920992901 has 12 divisors (see below), whose sum is σ = 12585897612. Its totient is φ = 11289567744.

The previous prime is 11920992871. The next prime is 11920992907. The reversal of 11920992901 is 10929902911.

11920992901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2238236100 + 9682756801 = 47310^2 + 98401^2 .

It is not a de Polignac number, because 11920992901 - 2²⁵ = 11887438469 is a prime.

It is a super-2 number, since 2×11920992901² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11920992907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1705125 + ... + 1712101.

It is an arithmetic number, because the mean of its divisors is an integer number (1048824801).

Almost surely, 2^11920992901 is an apocalyptic number.

It is an amenable number.

11920992901 is a deficient number, since it is larger than the sum of its proper divisors (664904711).

11920992901 is an equidigital number, since it uses as much as digits as its factorization.

11920992901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11748 (or 11729 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 43.

The spelling of 11920992901 in words is "eleven billion, nine hundred twenty million, nine hundred ninety-two thousand, nine hundred one".