111201222021 has 8 divisors (see below), whose sum is σ = 152275547424. Its totient is φ = 72130522320.

The previous prime is 111201222017. The next prime is 111201222029. The reversal of 111201222021 is 120222102111.

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

It is not a de Polignac number, because 111201222021 - 2² = 111201222017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111201222029) 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, 500906295 + ... + 500906516.

It is an arithmetic number, because the mean of its divisors is an integer number (19034443428).

Almost surely, 2^111201222021 is an apocalyptic number.

It is an amenable number.

111201222021 is a deficient number, since it is larger than the sum of its proper divisors (41074325403).

111201222021 is a wasteful number, since it uses less digits than its factorization.

111201222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001812851.

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

Adding to 111201222021 its reverse (120222102111), we get a palindrome (231423324132).

The spelling of 111201222021 in words is "one hundred eleven billion, two hundred one million, two hundred twenty-two thousand, twenty-one".