12120212220101 has 2 divisors, whose sum is σ = 12120212220102. Its totient is φ = 12120212220100.

The previous prime is 12120212220097. The next prime is 12120212220113. The reversal of 12120212220101 is 10102221202121.

12120212220101 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., 11910332788225 + 209879431876 = 3451135^2 + 458126^2 .

It is a cyclic number.

It is not a de Polignac number, because 12120212220101 - 2² = 12120212220097 is a prime.

It is a super-2 number, since 2×12120212220101² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12120212220101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12120212220131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060106110050 + 6060106110051.

It is an arithmetic number, because the mean of its divisors is an integer number (6060106110051).

Almost surely, 2^{12120212220101} is an apocalyptic number.

It is an amenable number.

12120212220101 is a deficient number, since it is larger than the sum of its proper divisors (1).

12120212220101 is an equidigital number, since it uses as much as digits as its factorization.

12120212220101 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 12120212220101 its reverse (10102221202121), we get a palindrome (22222433422222).

The spelling of 12120212220101 in words is "twelve trillion, one hundred twenty billion, two hundred twelve million, two hundred twenty thousand, one hundred one".