111202220322221 has 16 divisors (see below), whose sum is σ = 131189006327808. Its totient is φ = 92240676082800.

The previous prime is 111202220322163. The next prime is 111202220322223. The reversal of 111202220322221 is 122223022202111.

It is not a de Polignac number, because 111202220322221 - 2¹⁰ = 111202220321197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111202220322223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23653616 + ... + 27962438.

It is an arithmetic number, because the mean of its divisors is an integer number (8199312895488).

Almost surely, 2^{111202220322221} is an apocalyptic number.

It is an amenable number.

111202220322221 is a deficient number, since it is larger than the sum of its proper divisors (19986786005587).

111202220322221 is a wasteful number, since it uses less digits than its factorization.

111202220322221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4427792.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 111202220322221 its reverse (122223022202111), we get a palindrome (233425242524332).

The spelling of 111202220322221 in words is "one hundred eleven trillion, two hundred two billion, two hundred twenty million, three hundred twenty-two thousand, two hundred twenty-one".