111222120201 has 4 divisors (see below), whose sum is σ = 148296160272. Its totient is φ = 74148080132.

The previous prime is 111222120161. The next prime is 111222120293. The reversal of 111222120201 is 102021222111.

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 111222120201 - 2²⁷ = 111087902473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111222120601) 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, 18537020031 + ... + 18537020036.

It is an arithmetic number, because the mean of its divisors is an integer number (37074040068).

Almost surely, 2^111222120201 is an apocalyptic number.

It is an amenable number.

111222120201 is a deficient number, since it is larger than the sum of its proper divisors (37074040071).

111222120201 is an equidigital number, since it uses as much as digits as its factorization.

111222120201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37074040070.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 111222120201 its reverse (102021222111), we get a palindrome (213243342312).

The spelling of 111222120201 in words is "one hundred eleven billion, two hundred twenty-two million, one hundred twenty thousand, two hundred one".