1211200212029 has 2 divisors, whose sum is σ = 1211200212030. Its totient is φ = 1211200212028.

The previous prime is 1211200211999. The next prime is 1211200212043. The reversal of 1211200212029 is 9202120021121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1126778004004 + 84422208025 = 1061498^2 + 290555^2 .

It is a cyclic number.

It is not a de Polignac number, because 1211200212029 - 2²⁰ = 1211199163453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1211200211995 and 1211200212013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211200112029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605600106014 + 605600106015.

It is an arithmetic number, because the mean of its divisors is an integer number (605600106015).

Almost surely, 2^{1211200212029} is an apocalyptic number.

It is an amenable number.

1211200212029 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211200212029 is an equidigital number, since it uses as much as digits as its factorization.

1211200212029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 1211200212029 in words is "one trillion, two hundred eleven billion, two hundred million, two hundred twelve thousand, twenty-nine".