12212020200121 has 16 divisors (see below), whose sum is σ = 14256674617600. Its totient is φ = 10244110409280.

The previous prime is 12212020200119. The next prime is 12212020200209. The reversal of 12212020200121 is 12100202021221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12212020200121 - 2¹ = 12212020200119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12212020200095 and 12212020200104.

It is not an unprimeable number, because it can be changed into a prime (12212020200421) 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 15 ways as a sum of consecutive naturals, for example, 71773266 + ... + 71943211.

It is an arithmetic number, because the mean of its divisors is an integer number (891042163600).

Almost surely, 2^{12212020200121} is an apocalyptic number.

It is an amenable number.

12212020200121 is a deficient number, since it is larger than the sum of its proper divisors (2044654417479).

12212020200121 is a wasteful number, since it uses less digits than its factorization.

12212020200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143716744.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12212020200121 its reverse (12100202021221), we get a palindrome (24312222221342).

The spelling of 12212020200121 in words is "twelve trillion, two hundred twelve billion, twenty million, two hundred thousand, one hundred twenty-one".