12212031077 has 2 divisors, whose sum is σ = 12212031078. Its totient is φ = 12212031076.

The previous prime is 12212031059. The next prime is 12212031113. The reversal of 12212031077 is 77013021221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7547960641 + 4664070436 = 86879^2 + 68294^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12212031077 is a prime.

It is a super-2 number, since 2×12212031077² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12212031037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106015538 + 6106015539.

It is an arithmetic number, because the mean of its divisors is an integer number (6106015539).

Almost surely, 2^12212031077 is an apocalyptic number.

It is an amenable number.

12212031077 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212031077 is an equidigital number, since it uses as much as digits as its factorization.

12212031077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1176, while the sum is 26.

Adding to 12212031077 its reverse (77013021221), we get a palindrome (89225052298).

The spelling of 12212031077 in words is "twelve billion, two hundred twelve million, thirty-one thousand, seventy-seven".