12202121212121 has 32 divisors (see below), whose sum is σ = 12571381468800. Its totient is φ = 11837116279296.

The previous prime is 12202121212033. The next prime is 12202121212139. The reversal of 12202121212121 is 12121212120221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12202121212121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12202121212093 and 12202121212102.

It is not an unprimeable number, because it can be changed into a prime (12202121214121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6535682630 + ... + 6535684496.

It is an arithmetic number, because the mean of its divisors is an integer number (392855670900).

Almost surely, 2^{12202121212121} is an apocalyptic number.

It is an amenable number.

12202121212121 is a deficient number, since it is larger than the sum of its proper divisors (369260256679).

12202121212121 is a wasteful number, since it uses less digits than its factorization.

12202121212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3753.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12202121212121 its reverse (12121212120221), we get a palindrome (24323333332342).

The spelling of 12202121212121 in words is "twelve trillion, two hundred two billion, one hundred twenty-one million, two hundred twelve thousand, one hundred twenty-one".