111102201010221 has 4 divisors (see below), whose sum is σ = 148136268013632. Its totient is φ = 74068134006812.

The previous prime is 111102201010219. The next prime is 111102201010237. The reversal of 111102201010221 is 122010102201111.

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 111102201010221 - 2¹ = 111102201010219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111102201010221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111102201010291) 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, 18517033501701 + ... + 18517033501706.

It is an arithmetic number, because the mean of its divisors is an integer number (37034067003408).

Almost surely, 2^{111102201010221} is an apocalyptic number.

It is an amenable number.

111102201010221 is a deficient number, since it is larger than the sum of its proper divisors (37034067003411).

111102201010221 is an equidigital number, since it uses as much as digits as its factorization.

111102201010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37034067003410.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111102201010221 its reverse (122010102201111), we get a palindrome (233112303211332).

The spelling of 111102201010221 in words is "one hundred eleven trillion, one hundred two billion, two hundred one million, ten thousand, two hundred twenty-one".