12100012201261 has 2 divisors, whose sum is σ = 12100012201262. Its totient is φ = 12100012201260.

The previous prime is 12100012201163. The next prime is 12100012201301. The reversal of 12100012201261 is 16210221000121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9228648061161 + 2871364140100 = 3037869^2 + 1694510^2 .

It is a cyclic number.

It is not a de Polignac number, because 12100012201261 - 2³⁷ = 11962573247789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12100012201561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050006100630 + 6050006100631.

It is an arithmetic number, because the mean of its divisors is an integer number (6050006100631).

Almost surely, 2^{12100012201261} is an apocalyptic number.

It is an amenable number.

12100012201261 is a deficient number, since it is larger than the sum of its proper divisors (1).

12100012201261 is an equidigital number, since it uses as much as digits as its factorization.

12100012201261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 12100012201261 its reverse (16210221000121), we get a palindrome (28310233201382).

The spelling of 12100012201261 in words is "twelve trillion, one hundred billion, twelve million, two hundred one thousand, two hundred sixty-one".