11121201100001 has 4 divisors (see below), whose sum is σ = 11145969922500. Its totient is φ = 11096432277504.

The previous prime is 11121201099989. The next prime is 11121201100013. The reversal of 11121201100001 is 10000110212111.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (11121201099989) and next prime (11121201100013).

It can be written as a sum of positive squares in 2 ways, for example, as 9166240656400 + 1954960443601 = 3027580^2 + 1398199^2 .

It is a cyclic number.

It is not a de Polignac number, because 11121201100001 - 2²⁶ = 11121133991137 is a prime.

It is a super-2 number, since 2×11121201100001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11121201600001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12384410576 + ... + 12384411473.

It is an arithmetic number, because the mean of its divisors is an integer number (2786492480625).

Almost surely, 2^{11121201100001} is an apocalyptic number.

It is an amenable number.

11121201100001 is a deficient number, since it is larger than the sum of its proper divisors (24768822499).

11121201100001 is an equidigital number, since it uses as much as digits as its factorization.

11121201100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24768822498.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11121201100001 its reverse (10000110212111), we get a palindrome (21121311312112).

The spelling of 11121201100001 in words is "eleven trillion, one hundred twenty-one billion, two hundred one million, one hundred thousand, one".