1204202032861 has 2 divisors, whose sum is σ = 1204202032862. Its totient is φ = 1204202032860.

The previous prime is 1204202032807. The next prime is 1204202032867. The reversal of 1204202032861 is 1682302024021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 948080005636 + 256122027225 = 973694^2 + 506085^2 .

It is a cyclic number.

It is not a de Polignac number, because 1204202032861 - 2¹⁵ = 1204202000093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1204202032867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602101016430 + 602101016431.

It is an arithmetic number, because the mean of its divisors is an integer number (602101016431).

Almost surely, 2^{1204202032861} is an apocalyptic number.

It is an amenable number.

1204202032861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1204202032861 is an equidigital number, since it uses as much as digits as its factorization.

1204202032861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 31.

Adding to 1204202032861 its reverse (1682302024021), we get a palindrome (2886504056882).

The spelling of 1204202032861 in words is "one trillion, two hundred four billion, two hundred two million, thirty-two thousand, eight hundred sixty-one".