111121221201 has 8 divisors (see below), whose sum is σ = 148163363424. Its totient is φ = 74079946560.

The previous prime is 111121221199. The next prime is 111121221209. The reversal of 111121221201 is 102122121111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111121221201 - 2¹ = 111121221199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111121221209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192190 + ... + 509096.

It is an arithmetic number, because the mean of its divisors is an integer number (18520420428).

Almost surely, 2^111121221201 is an apocalyptic number.

It is an amenable number.

111121221201 is a deficient number, since it is larger than the sum of its proper divisors (37042142223).

111121221201 is a wasteful number, since it uses less digits than its factorization.

111121221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433791.

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

Adding to 111121221201 its reverse (102122121111), we get a palindrome (213243342312).

The spelling of 111121221201 in words is "one hundred eleven billion, one hundred twenty-one million, two hundred twenty-one thousand, two hundred one".