111002111122221 has 16 divisors (see below), whose sum is σ = 179397351309120. Its totient is φ = 67274006740560.

The previous prime is 111002111122187. The next prime is 111002111122271. The reversal of 111002111122221 is 122221111200111.

It is a happy number.

111002111122221 is a `hidden beast` number, since 1 + 110 + 0 + 211 + 1 + 122 + 221 = 666.

It is not a de Polignac number, because 111002111122221 - 2⁶ = 111002111122157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111002111122194 and 111002111122203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111002111122271) 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, 186872240650 + ... + 186872241243.

It is an arithmetic number, because the mean of its divisors is an integer number (11212334456820).

Almost surely, 2^{111002111122221} is an apocalyptic number.

111002111122221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111002111122221 is a deficient number, since it is larger than the sum of its proper divisors (68395240186899).

111002111122221 is a wasteful number, since it uses less digits than its factorization.

111002111122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373744481913 (or 373744481907 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 111002111122221 its reverse (122221111200111), we get a palindrome (233223222322332).

The spelling of 111002111122221 in words is "one hundred eleven trillion, two billion, one hundred eleven million, one hundred twenty-two thousand, two hundred twenty-one".