1212211212029 has 2 divisors, whose sum is σ = 1212211212030. Its totient is φ = 1212211212028.

The previous prime is 1212211211999. The next prime is 1212211212041. The reversal of 1212211212029 is 9202121122121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 629843815129 + 582367396900 = 793627^2 + 763130^2 .

It is an emirp because it is prime and its reverse (9202121122121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212211212029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1212211211989 and 1212211212007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212211212059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606105606014 + 606105606015.

It is an arithmetic number, because the mean of its divisors is an integer number (606105606015).

Almost surely, 2^{1212211212029} is an apocalyptic number.

It is an amenable number.

1212211212029 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212211212029 is an equidigital number, since it uses as much as digits as its factorization.

1212211212029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 1212211212029 in words is "one trillion, two hundred twelve billion, two hundred eleven million, two hundred twelve thousand, twenty-nine".