12101220022121 has 2 divisors, whose sum is σ = 12101220022122. Its totient is φ = 12101220022120.

The previous prime is 12101220022117. The next prime is 12101220022127. The reversal of 12101220022121 is 12122002210121.

12101220022121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12043398529600 + 57821492521 = 3470360^2 + 240461^2 .

It is a cyclic number.

It is not a de Polignac number, because 12101220022121 - 2² = 12101220022117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12101220022121.

It is not a weakly prime, because it can be changed into another prime (12101220022127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050610011060 + 6050610011061.

It is an arithmetic number, because the mean of its divisors is an integer number (6050610011061).

Almost surely, 2^{12101220022121} is an apocalyptic number.

It is an amenable number.

12101220022121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12101220022121 is an equidigital number, since it uses as much as digits as its factorization.

12101220022121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12101220022121 its reverse (12122002210121), we get a palindrome (24223222232242).

The spelling of 12101220022121 in words is "twelve trillion, one hundred one billion, two hundred twenty million, twenty-two thousand, one hundred twenty-one".