12212022220121 has 8 divisors (see below), whose sum is σ = 12496075393824. Its totient is φ = 11927971440000.

The previous prime is 12212022220087. The next prime is 12212022220157. The reversal of 12212022220121 is 12102222021221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12212022220121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12212022220093 and 12212022220102.

It is not an unprimeable number, because it can be changed into a prime (12212022220721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13593545 + ... + 14464041.

It is an arithmetic number, because the mean of its divisors is an integer number (1562009424228).

Almost surely, 2^{12212022220121} is an apocalyptic number.

It is an amenable number.

12212022220121 is a deficient number, since it is larger than the sum of its proper divisors (284053173703).

12212022220121 is an equidigital number, since it uses as much as digits as its factorization.

12212022220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196791.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12212022220121 its reverse (12102222021221), we get a palindrome (24314244241342).

The spelling of 12212022220121 in words is "twelve trillion, two hundred twelve billion, twenty-two million, two hundred twenty thousand, one hundred twenty-one".