12100230221 has 2 divisors, whose sum is σ = 12100230222. Its totient is φ = 12100230220.

The previous prime is 12100230133. The next prime is 12100230257. The reversal of 12100230221 is 12203200121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10224040996 + 1876189225 = 101114^2 + 43315^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12100230221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12100230196 and 12100230205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12100230271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050115110 + 6050115111.

It is an arithmetic number, because the mean of its divisors is an integer number (6050115111).

Almost surely, 2^12100230221 is an apocalyptic number.

It is an amenable number.

12100230221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12100230221 is an equidigital number, since it uses as much as digits as its factorization.

12100230221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 12100230221 its reverse (12203200121), we get a palindrome (24303430342).

The spelling of 12100230221 in words is "twelve billion, one hundred million, two hundred thirty thousand, two hundred twenty-one".