11101112121001 has 16 divisors (see below), whose sum is σ = 13447463757696. Its totient is φ = 8946062205696.

The previous prime is 11101112120999. The next prime is 11101112121007. The reversal of 11101112121001 is 10012121110111.

It is not a de Polignac number, because 11101112121001 - 2¹ = 11101112120999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11101112121007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49141086 + ... + 49366471.

It is an arithmetic number, because the mean of its divisors is an integer number (840466484856).

Almost surely, 2^{11101112121001} is an apocalyptic number.

It is an amenable number.

11101112121001 is a deficient number, since it is larger than the sum of its proper divisors (2346351636695).

11101112121001 is an equidigital number, since it uses as much as digits as its factorization.

11101112121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98508528.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 11101112121001 its reverse (10012121110111), we get a palindrome (21113233231112).

The spelling of 11101112121001 in words is "eleven trillion, one hundred one billion, one hundred twelve million, one hundred twenty-one thousand, one".