111121120221201 has 24 divisors (see below), whose sum is σ = 162103067405760. Its totient is φ = 73344743892000.

The previous prime is 111121120221191. The next prime is 111121120221271. The reversal of 111121120221201 is 102122021121111.

It is a happy number.

111121120221201 is a `hidden beast` number, since 1 + 1 + 1 + 121 + 120 + 221 + 201 = 666.

It is not a de Polignac number, because 111121120221201 - 2⁷ = 111121120221073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111121120221271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24440730 + ... + 28628508.

It is an arithmetic number, because the mean of its divisors is an integer number (6754294475240).

Almost surely, 2^{111121120221201} is an apocalyptic number.

It is an amenable number.

111121120221201 is a deficient number, since it is larger than the sum of its proper divisors (50981947184559).

111121120221201 is a wasteful number, since it uses less digits than its factorization.

111121120221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4217077 (or 4217074 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 111121120221201 its reverse (102122021121111), we get a palindrome (213243141342312).

The spelling of 111121120221201 in words is "one hundred eleven trillion, one hundred twenty-one billion, one hundred twenty million, two hundred twenty-one thousand, two hundred one".