111244221001 has 4 divisors (see below), whose sum is σ = 113831295952. Its totient is φ = 108657146052.

The previous prime is 111244220959. The next prime is 111244221013. The reversal of 111244221001 is 100122442111.

It is a happy number.

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 not a de Polignac number, because 111244221001 - 2⁷ = 111244220873 is a prime.

It is a super-2 number, since 2×111244221001² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111244221001.

It is not an unprimeable number, because it can be changed into a prime (111244227001) 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, 1293537411 + ... + 1293537496.

It is an arithmetic number, because the mean of its divisors is an integer number (28457823988).

Almost surely, 2^111244221001 is an apocalyptic number.

It is an amenable number.

111244221001 is a deficient number, since it is larger than the sum of its proper divisors (2587074951).

111244221001 is an equidigital number, since it uses as much as digits as its factorization.

111244221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2587074950.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 111244221001 its reverse (100122442111), we get a palindrome (211366663112).

The spelling of 111244221001 in words is "one hundred eleven billion, two hundred forty-four million, two hundred twenty-one thousand, one".