111012210022221 has 24 divisors (see below), whose sum is σ = 160556783212800. Its totient is φ = 73913179485600.

The previous prime is 111012210022211. The next prime is 111012210022223. The reversal of 111012210022221 is 122220012210111.

It is not a de Polignac number, because 111012210022221 - 2⁷ = 111012210022093 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111012210022194 and 111012210022203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111012210022223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43012491 + ... + 45520311.

It is an arithmetic number, because the mean of its divisors is an integer number (6689865967200).

Almost surely, 2^{111012210022221} is an apocalyptic number.

It is an amenable number.

111012210022221 is a deficient number, since it is larger than the sum of its proper divisors (49544573190579).

111012210022221 is a wasteful number, since it uses less digits than its factorization.

111012210022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2514137 (or 2514134 counting only the distinct ones).

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

Adding to 111012210022221 its reverse (122220012210111), we get a palindrome (233232222232332).

The spelling of 111012210022221 in words is "one hundred eleven trillion, twelve billion, two hundred ten million, twenty-two thousand, two hundred twenty-one".