111022101022221 has 24 divisors (see below), whose sum is σ = 166729253134080. Its totient is φ = 71111858601600.

The previous prime is 111022101022193. The next prime is 111022101022223. The reversal of 111022101022221 is 122220101220111.

It is not a de Polignac number, because 111022101022221 - 2¹³ = 111022101014029 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111022101022194 and 111022101022203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111022101022223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1431359340 + ... + 1431436901.

It is an arithmetic number, because the mean of its divisors is an integer number (6947052213920).

Almost surely, 2^{111022101022221} is an apocalyptic number.

It is an amenable number.

111022101022221 is a deficient number, since it is larger than the sum of its proper divisors (55707152111859).

111022101022221 is a wasteful number, since it uses less digits than its factorization.

111022101022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2862796417 (or 2862796414 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111022101022221 its reverse (122220101220111), we get a palindrome (233242202242332).

The spelling of 111022101022221 in words is "one hundred eleven trillion, twenty-two billion, one hundred one million, twenty-two thousand, two hundred twenty-one".