12210121200077 has 2 divisors, whose sum is σ = 12210121200078. Its totient is φ = 12210121200076.

The previous prime is 12210121200071. The next prime is 12210121200127. The reversal of 12210121200077 is 77000212101221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12204255784681 + 5865415396 = 3493459^2 + 76586^2 .

It is a cyclic number.

It is not a de Polignac number, because 12210121200077 - 2⁸ = 12210121199821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12210121200071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105060600038 + 6105060600039.

It is an arithmetic number, because the mean of its divisors is an integer number (6105060600039).

Almost surely, 2^{12210121200077} is an apocalyptic number.

It is an amenable number.

12210121200077 is a deficient number, since it is larger than the sum of its proper divisors (1).

12210121200077 is an equidigital number, since it uses as much as digits as its factorization.

12210121200077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 784, while the sum is 26.

Adding to 12210121200077 its reverse (77000212101221), we get a palindrome (89210333301298).

The spelling of 12210121200077 in words is "twelve trillion, two hundred ten billion, one hundred twenty-one million, two hundred thousand, seventy-seven".