111210012222121 has 24 divisors (see below), whose sum is σ = 113320821213600. Its totient is φ = 109137756672000.

The previous prime is 111210012222119. The next prime is 111210012222139. The reversal of 111210012222121 is 121222210012111.

It is a happy number.

It is not a de Polignac number, because 111210012222121 - 2¹ = 111210012222119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111210012222191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3007364410 + ... + 3007401388.

It is an arithmetic number, because the mean of its divisors is an integer number (4721700883900).

Almost surely, 2^{111210012222121} is an apocalyptic number.

It is an amenable number.

111210012222121 is a deficient number, since it is larger than the sum of its proper divisors (2110808991479).

111210012222121 is an equidigital number, since it uses as much as digits as its factorization.

111210012222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38921 (or 38860 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111210012222121 its reverse (121222210012111), we get a palindrome (232432222234232).

The spelling of 111210012222121 in words is "one hundred eleven trillion, two hundred ten billion, twelve million, two hundred twenty-two thousand, one hundred twenty-one".