111213110211001 has 4 divisors (see below), whose sum is σ = 111213134467072. Its totient is φ = 111213085954932.

The previous prime is 111213110210977. The next prime is 111213110211023. The reversal of 111213110211001 is 100112011312111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111213110211001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111213110241001) 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, 2920485 + ... + 15197218.

It is an arithmetic number, because the mean of its divisors is an integer number (27803283616768).

Almost surely, 2^{111213110211001} is an apocalyptic number.

It is an amenable number.

111213110211001 is a deficient number, since it is larger than the sum of its proper divisors (24256071).

111213110211001 is an equidigital number, since it uses as much as digits as its factorization.

111213110211001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24256070.

The product of its (nonzero) digits is 12, while the sum is 16.

Adding to 111213110211001 its reverse (100112011312111), we get a palindrome (211325121523112).

It can be divided in two parts, 111213110 and 211001, that added together give a palindrome (111424111).

The spelling of 111213110211001 in words is "one hundred eleven trillion, two hundred thirteen billion, one hundred ten million, two hundred eleven thousand, one".