12220110021121 has 4 divisors (see below), whose sum is σ = 12220431954352. Its totient is φ = 12219788087892.

The previous prime is 12220110021109. The next prime is 12220110021127. The reversal of 12220110021121 is 12112001102221.

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 a de Polignac number, because none of the positive numbers 2^k-12220110021121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12220110021095 and 12220110021104.

It is not an unprimeable number, because it can be changed into a prime (12220110021127) 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, 160909671 + ... + 160985596.

It is an arithmetic number, because the mean of its divisors is an integer number (3055107988588).

Almost surely, 2^{12220110021121} is an apocalyptic number.

It is an amenable number.

12220110021121 is a deficient number, since it is larger than the sum of its proper divisors (321933231).

12220110021121 is an equidigital number, since it uses as much as digits as its factorization.

12220110021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321933230.

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

Adding to 12220110021121 its reverse (12112001102221), we get a palindrome (24332111123342).

It can be divided in two parts, 122201100 and 21121, that added together give a palindrome (122222221).

The spelling of 12220110021121 in words is "twelve trillion, two hundred twenty billion, one hundred ten million, twenty-one thousand, one hundred twenty-one".