12212020121 has 8 divisors (see below), whose sum is σ = 14058468480. Its totient is φ = 10391040288.

The previous prime is 12212020097. The next prime is 12212020181. The reversal of 12212020121 is 12102021221.

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

It is a cyclic number.

It is not a de Polignac number, because 12212020121 - 2¹⁰ = 12212019097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12212020096 and 12212020105.

It is not an unprimeable number, because it can be changed into a prime (12212020181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6366101 + ... + 6368018.

It is an arithmetic number, because the mean of its divisors is an integer number (1757308560).

Almost surely, 2^12212020121 is an apocalyptic number.

It is an amenable number.

12212020121 is a deficient number, since it is larger than the sum of its proper divisors (1846448359).

12212020121 is a wasteful number, since it uses less digits than its factorization.

12212020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12734263.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12212020121 its reverse (12102021221), we get a palindrome (24314041342).

It can be divided in two parts, 122120 and 20121, that added together give a palindrome (142241).

The spelling of 12212020121 in words is "twelve billion, two hundred twelve million, twenty thousand, one hundred twenty-one".