111022221121 has 8 divisors (see below), whose sum is σ = 126885620160. Its totient is φ = 95159592528.

The previous prime is 111022221061. The next prime is 111022221151. The reversal of 111022221121 is 121122220111.

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

It is not a de Polignac number, because 111022221121 - 2¹³ = 111022212929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111022221095 and 111022221104.

It is not an unprimeable number, because it can be changed into a prime (111022221151) 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, 158970 + ... + 497308.

It is an arithmetic number, because the mean of its divisors is an integer number (15860702520).

Almost surely, 2^111022221121 is an apocalyptic number.

It is an amenable number.

111022221121 is a deficient number, since it is larger than the sum of its proper divisors (15863399039).

111022221121 is an equidigital number, since it uses as much as digits as its factorization.

111022221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385223.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111022221121 its reverse (121122220111), we get a palindrome (232144441232).

The spelling of 111022221121 in words is "one hundred eleven billion, twenty-two million, two hundred twenty-one thousand, one hundred twenty-one".