111022022221 has 4 divisors (see below), whose sum is σ = 121114933344. Its totient is φ = 100929111100.

The previous prime is 111022022201. The next prime is 111022022239. The reversal of 111022022221 is 122220220111.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-111022022221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111022022195 and 111022022204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111022022201) 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, 5046455545 + ... + 5046455566.

It is an arithmetic number, because the mean of its divisors is an integer number (30278733336).

Almost surely, 2^111022022221 is an apocalyptic number.

111022022221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111022022221 is a deficient number, since it is larger than the sum of its proper divisors (10092911123).

111022022221 is a wasteful number, since it uses less digits than its factorization.

111022022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10092911122.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 111022022221 its reverse (122220220111), we get a palindrome (233242242332).

The spelling of 111022022221 in words is "one hundred eleven billion, twenty-two million, twenty-two thousand, two hundred twenty-one".