111210011022221 has 4 divisors (see below), whose sum is σ = 111210901489632. Its totient is φ = 111209120554812.

The previous prime is 111210011022203. The next prime is 111210011022287. The reversal of 111210011022221 is 122220110012111.

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 111210011022221 - 2²² = 111210006827917 is a prime.

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 111210011022221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111210011022521) 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, 445046345 + ... + 445296158.

It is an arithmetic number, because the mean of its divisors is an integer number (27802725372408).

Almost surely, 2^{111210011022221} is an apocalyptic number.

It is an amenable number.

111210011022221 is a deficient number, since it is larger than the sum of its proper divisors (890467411).

111210011022221 is an equidigital number, since it uses as much as digits as its factorization.

111210011022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890467410.

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

Adding to 111210011022221 its reverse (122220110012111), we get a palindrome (233430121034332).

The spelling of 111210011022221 in words is "one hundred eleven trillion, two hundred ten billion, eleven million, twenty-two thousand, two hundred twenty-one".