220111102002121 has 4 divisors (see below), whose sum is σ = 240121202184144. Its totient is φ = 200101001820100.

The previous prime is 220111102002097. The next prime is 220111102002191. The reversal of 220111102002121 is 121200201111022.

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 220111102002121 - 2⁵ = 220111102002089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220111102002095 and 220111102002104.

It is not an unprimeable number, because it can be changed into a prime (220111102002191) 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, 10005050090995 + ... + 10005050091016.

It is an arithmetic number, because the mean of its divisors is an integer number (60030300546036).

Almost surely, 2^{220111102002121} is an apocalyptic number.

It is an amenable number.

220111102002121 is a deficient number, since it is larger than the sum of its proper divisors (20010100182023).

220111102002121 is a wasteful number, since it uses less digits than its factorization.

220111102002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20010100182022.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 220111102002121 its reverse (121200201111022), we get a palindrome (341311303113143).

The spelling of 220111102002121 in words is "two hundred twenty trillion, one hundred eleven billion, one hundred two million, two thousand, one hundred twenty-one".