1201196363891 has 2 divisors, whose sum is σ = 1201196363892. Its totient is φ = 1201196363890.

The previous prime is 1201196363879. The next prime is 1201196363933. The reversal of 1201196363891 is 1983636911021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1201196363891 - 2¹⁸ = 1201196101747 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201196363491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600598181945 + 600598181946.

It is an arithmetic number, because the mean of its divisors is an integer number (600598181946).

Almost surely, 2^{1201196363891} is an apocalyptic number.

1201196363891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201196363891 is an equidigital number, since it uses as much as digits as its factorization.

1201196363891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 419904, while the sum is 50.

The spelling of 1201196363891 in words is "one trillion, two hundred one billion, one hundred ninety-six million, three hundred sixty-three thousand, eight hundred ninety-one".