111201210120201 has 4 divisors (see below), whose sum is σ = 148268280160272. Its totient is φ = 74134140080132.

The previous prime is 111201210120173. The next prime is 111201210120263. The reversal of 111201210120201 is 102021012102111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111201210120201 - 2⁹ = 111201210119689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111201210124201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18533535020031 + ... + 18533535020036.

It is an arithmetic number, because the mean of its divisors is an integer number (37067070040068).

Almost surely, 2^{111201210120201} is an apocalyptic number.

It is an amenable number.

111201210120201 is a deficient number, since it is larger than the sum of its proper divisors (37067070040071).

111201210120201 is an equidigital number, since it uses as much as digits as its factorization.

111201210120201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37067070040070.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111201210120201 its reverse (102021012102111), we get a palindrome (213222222222312).

The spelling of 111201210120201 in words is "one hundred eleven trillion, two hundred one billion, two hundred ten million, one hundred twenty thousand, two hundred one".