111212201200213 has 4 divisors (see below), whose sum is σ = 111229608031020. Its totient is φ = 111194794369408.

The previous prime is 111212201200183. The next prime is 111212201200297. The reversal of 111212201200213 is 312002102212111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3556988456004 + 107655212744209 = 1885998^2 + 10375703^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111212201200213 is a prime.

It is a super-2 number, since 2×111212201200213² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111212201204213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8703405820 + ... + 8703418597.

It is an arithmetic number, because the mean of its divisors is an integer number (27807402007755).

Almost surely, 2^{111212201200213} is an apocalyptic number.

It is an amenable number.

111212201200213 is a deficient number, since it is larger than the sum of its proper divisors (17406830807).

111212201200213 is an equidigital number, since it uses as much as digits as its factorization.

111212201200213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17406830806.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 111212201200213 its reverse (312002102212111), we get a palindrome (423214303412324).

The spelling of 111212201200213 in words is "one hundred eleven trillion, two hundred twelve billion, two hundred one million, two hundred thousand, two hundred thirteen".