111002221112121 has 16 divisors (see below), whose sum is σ = 164450951596800. Its totient is φ = 74000033264304.

The previous prime is 111002221112119. The next prime is 111002221112177. The reversal of 111002221112121 is 121211122200111.

It is a happy number.

It is not a de Polignac number, because 111002221112121 - 2¹ = 111002221112119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111002221112094 and 111002221112103.

It is not an unprimeable number, because it can be changed into a prime (111002221112221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38800881 + ... + 41563358.

It is an arithmetic number, because the mean of its divisors is an integer number (10278184474800).

Almost surely, 2^{111002221112121} is an apocalyptic number.

It is an amenable number.

111002221112121 is a deficient number, since it is larger than the sum of its proper divisors (53448730484679).

111002221112121 is an equidigital number, since it uses as much as digits as its factorization.

111002221112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80415405 (or 80415399 counting only the distinct ones).

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

Adding to 111002221112121 its reverse (121211122200111), we get a palindrome (232213343312232).

The spelling of 111002221112121 in words is "one hundred eleven trillion, two billion, two hundred twenty-one million, one hundred twelve thousand, one hundred twenty-one".