111002210221 has 12 divisors (see below), whose sum is σ = 132274413180. Its totient is φ = 92824146240.

The previous prime is 111002210213. The next prime is 111002210227. The reversal of 111002210221 is 122012200111.

It can be written as a sum of positive squares in 2 ways, for example, as 6912093321 + 104090116900 = 83139^2 + 322630^2 .

It is not a de Polignac number, because 111002210221 - 2³ = 111002210213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111002210227) 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 11 ways as a sum of consecutive naturals, for example, 27624226 + ... + 27628243.

It is an arithmetic number, because the mean of its divisors is an integer number (11022867765).

Almost surely, 2^111002210221 is an apocalyptic number.

It is an amenable number.

111002210221 is a deficient number, since it is larger than the sum of its proper divisors (21272202959).

111002210221 is an equidigital number, since it uses as much as digits as its factorization.

111002210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55252524 (or 55252517 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 111002210221 its reverse (122012200111), we get a palindrome (233014410332).

The spelling of 111002210221 in words is "one hundred eleven billion, two million, two hundred ten thousand, two hundred twenty-one".