111022220121 has 8 divisors (see below), whose sum is σ = 148046828160. Its totient is φ = 74006212752.

The previous prime is 111022220083. The next prime is 111022220123. The reversal of 111022220121 is 121022220111.

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

It is not a de Polignac number, because 111022220121 - 2¹⁹ = 111021695833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111022220121.

It is not an unprimeable number, because it can be changed into a prime (111022220123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2119986 + ... + 2171723.

It is an arithmetic number, because the mean of its divisors is an integer number (18505853520).

Almost surely, 2^111022220121 is an apocalyptic number.

It is an amenable number.

111022220121 is a deficient number, since it is larger than the sum of its proper divisors (37024608039).

111022220121 is an equidigital number, since it uses as much as digits as its factorization.

111022220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4300335.

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

Adding to 111022220121 its reverse (121022220111), we get a palindrome (232044440232).

The spelling of 111022220121 in words is "one hundred eleven billion, twenty-two million, two hundred twenty thousand, one hundred twenty-one".