11100021121 has 8 divisors (see below), whose sum is σ = 13123177920. Its totient is φ = 9186224208.

The previous prime is 11100021091. The next prime is 11100021137. The reversal of 11100021121 is 12112000111.

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

It is not a de Polignac number, because 11100021121 - 2¹⁵ = 11099988353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11100021098 and 11100021107.

It is not an unprimeable number, because it can be changed into a prime (11100021151) 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, 27339751 + ... + 27340156.

It is an arithmetic number, because the mean of its divisors is an integer number (1640397240).

Almost surely, 2^11100021121 is an apocalyptic number.

It is an amenable number.

11100021121 is a deficient number, since it is larger than the sum of its proper divisors (2023156799).

11100021121 is an equidigital number, since it uses as much as digits as its factorization.

11100021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54679943.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 11100021121 its reverse (12112000111), we get a palindrome (23212021232).

The spelling of 11100021121 in words is "eleven billion, one hundred million, twenty-one thousand, one hundred twenty-one".