12202020121 has 4 divisors (see below), whose sum is σ = 12206754000. Its totient is φ = 12197286244.

The previous prime is 12202020119. The next prime is 12202020133. The reversal of 12202020121 is 12102020221.

It is a happy number.

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 12202020121 - 2¹ = 12202020119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12202020821) 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, 2363071 + ... + 2368228.

It is an arithmetic number, because the mean of its divisors is an integer number (3051688500).

Almost surely, 2^12202020121 is an apocalyptic number.

It is an amenable number.

12202020121 is a deficient number, since it is larger than the sum of its proper divisors (4733879).

12202020121 is an equidigital number, since it uses as much as digits as its factorization.

12202020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4733878.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12202020121 its reverse (12102020221), we get a palindrome (24304040342).

The spelling of 12202020121 in words is "twelve billion, two hundred two million, twenty thousand, one hundred twenty-one".