111122220121001 has 4 divisors (see below), whose sum is σ = 111182909483904. Its totient is φ = 111061530758100.

The previous prime is 111122220120949. The next prime is 111122220121039. The reversal of 111122220121001 is 100121022221111.

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 111122220121001 - 2²⁶ = 111122153012137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111122220123001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30344678705 + ... + 30344682366.

It is an arithmetic number, because the mean of its divisors is an integer number (27795727370976).

Almost surely, 2^{111122220121001} is an apocalyptic number.

It is an amenable number.

111122220121001 is a deficient number, since it is larger than the sum of its proper divisors (60689362903).

111122220121001 is an equidigital number, since it uses as much as digits as its factorization.

111122220121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60689362902.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111122220121001 its reverse (100121022221111), we get a palindrome (211243242342112).

The spelling of 111122220121001 in words is "one hundred eleven trillion, one hundred twenty-two billion, two hundred twenty million, one hundred twenty-one thousand, one".