111200212001 has 8 divisors (see below), whose sum is σ = 115043097000. Its totient is φ = 107357886720.

The previous prime is 111200211917. The next prime is 111200212007. The reversal of 111200212001 is 100212002111.

It can be written as a sum of positive squares in 4 ways, for example, as 59250862225 + 51949349776 = 243415^2 + 227924^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111200212001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111200212007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286331 + ... + 551711.

It is an arithmetic number, because the mean of its divisors is an integer number (14380387125).

Almost surely, 2^111200212001 is an apocalyptic number.

It is an amenable number.

111200212001 is a deficient number, since it is larger than the sum of its proper divisors (3842884999).

111200212001 is a wasteful number, since it uses less digits than its factorization.

111200212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279859.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 111200212001 its reverse (100212002111), we get a palindrome (211412214112).

The spelling of 111200212001 in words is "one hundred eleven billion, two hundred million, two hundred twelve thousand, one".