121112011000221 has 4 divisors (see below), whose sum is σ = 161482681333632. Its totient is φ = 80741340666812.

The previous prime is 121112011000199. The next prime is 121112011000241. The reversal of 121112011000221 is 122000110211121.

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 121112011000221 - 2¹⁰ = 121112010999197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121112011000221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121112011000241) 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, 20185335166701 + ... + 20185335166706.

It is an arithmetic number, because the mean of its divisors is an integer number (40370670333408).

Almost surely, 2^{121112011000221} is an apocalyptic number.

It is an amenable number.

121112011000221 is a deficient number, since it is larger than the sum of its proper divisors (40370670333411).

121112011000221 is an equidigital number, since it uses as much as digits as its factorization.

121112011000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40370670333410.

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

Adding to 121112011000221 its reverse (122000110211121), we get a palindrome (243112121211342).

The spelling of 121112011000221 in words is "one hundred twenty-one trillion, one hundred twelve billion, eleven million, two hundred twenty-one", and thus it is an aban number.