111121100112001 has 16 divisors (see below), whose sum is σ = 127681865837568. Its totient is φ = 94732512613200.

The previous prime is 111121100111993. The next prime is 111121100112091. The reversal of 111121100112001 is 100211001121111.

It is not a de Polignac number, because 111121100112001 - 2³ = 111121100111993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111121100112091) 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, 22663795 + ... + 27127288.

It is an arithmetic number, because the mean of its divisors is an integer number (7980116614848).

Almost surely, 2^{111121100112001} is an apocalyptic number.

It is an amenable number.

111121100112001 is a deficient number, since it is larger than the sum of its proper divisors (16560765725567).

111121100112001 is a wasteful number, since it uses less digits than its factorization.

111121100112001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49792812.

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

Adding to 111121100112001 its reverse (100211001121111), we get a palindrome (211332101233112).

The spelling of 111121100112001 in words is "one hundred eleven trillion, one hundred twenty-one billion, one hundred million, one hundred twelve thousand, one".