111122002221 has 4 divisors (see below), whose sum is σ = 148162669632. Its totient is φ = 74081334812.

The previous prime is 111122002219. The next prime is 111122002267. The reversal of 111122002221 is 122200221111.

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 111122002221 - 2¹ = 111122002219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111122002221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111122002291) 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, 18520333701 + ... + 18520333706.

It is an arithmetic number, because the mean of its divisors is an integer number (37040667408).

Almost surely, 2^111122002221 is an apocalyptic number.

It is an amenable number.

111122002221 is a deficient number, since it is larger than the sum of its proper divisors (37040667411).

111122002221 is an equidigital number, since it uses as much as digits as its factorization.

111122002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37040667410.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 111122002221 its reverse (122200221111), we get a palindrome (233322223332).

The spelling of 111122002221 in words is "one hundred eleven billion, one hundred twenty-two million, two thousand, two hundred twenty-one".