1200121219061 has 2 divisors, whose sum is σ = 1200121219062. Its totient is φ = 1200121219060.

The previous prime is 1200121219021. The next prime is 1200121219069. The reversal of 1200121219061 is 1609121210021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 758128938436 + 441992280625 = 870706^2 + 664825^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200121219061 - 2¹⁴ = 1200121202677 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1200121219061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200121219069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600060609530 + 600060609531.

It is an arithmetic number, because the mean of its divisors is an integer number (600060609531).

Almost surely, 2^{1200121219061} is an apocalyptic number.

It is an amenable number.

1200121219061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200121219061 is an equidigital number, since it uses as much as digits as its factorization.

1200121219061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 26.

Adding to 1200121219061 its reverse (1609121210021), we get a palindrome (2809242429082).

The spelling of 1200121219061 in words is "one trillion, two hundred billion, one hundred twenty-one million, two hundred nineteen thousand, sixty-one".