111121201100001 has 16 divisors (see below), whose sum is σ = 151809080209920. Its totient is φ = 72257865674880.

The previous prime is 111121201099957. The next prime is 111121201100011. The reversal of 111121201100001 is 100001102121111.

It is not a de Polignac number, because 111121201100001 - 2¹³ = 111121201091809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111121201100001.

It is not an unprimeable number, because it can be changed into a prime (111121201100011) 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, 99984241 + ... + 101089518.

It is an arithmetic number, because the mean of its divisors is an integer number (9488067513120).

Almost surely, 2^{111121201100001} is an apocalyptic number.

It is an amenable number.

111121201100001 is a deficient number, since it is larger than the sum of its proper divisors (40687879109919).

111121201100001 is a wasteful number, since it uses less digits than its factorization.

111121201100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201078296.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 111121201100001 its reverse (100001102121111), we get a palindrome (211122303221112).

The spelling of 111121201100001 in words is "one hundred eleven trillion, one hundred twenty-one billion, two hundred one million, one hundred thousand, one".