111210002001 has 16 divisors (see below), whose sum is σ = 188292067200. Its totient is φ = 63548572464.

The previous prime is 111210001999. The next prime is 111210002009. The reversal of 111210002001 is 100200012111.

It is a happy number.

It is not a de Polignac number, because 111210002001 - 2¹ = 111210001999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111210002009) 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 15 ways as a sum of consecutive naturals, for example, 294206166 + ... + 294206543.

It is an arithmetic number, because the mean of its divisors is an integer number (11768254200).

Almost surely, 2^111210002001 is an apocalyptic number.

It is an amenable number.

111210002001 is a deficient number, since it is larger than the sum of its proper divisors (77082065199).

111210002001 is an equidigital number, since it uses as much as digits as its factorization.

111210002001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588412725 (or 588412719 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 111210002001 its reverse (100200012111), we get a palindrome (211410014112).

The spelling of 111210002001 in words is "one hundred eleven billion, two hundred ten million, two thousand, one".