1201021963 has 2 divisors, whose sum is σ = 1201021964. Its totient is φ = 1201021962.

The previous prime is 1201021957. The next prime is 1201022041. The reversal of 1201021963 is 3691201021.

It is a weak prime.

It is an emirp because it is prime and its reverse (3691201021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1201021963 - 2¹⁷ = 1200890891 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201021903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600510981 + 600510982.

It is an arithmetic number, because the mean of its divisors is an integer number (600510982).

Almost surely, 2^1201021963 is an apocalyptic number.

1201021963 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201021963 is an equidigital number, since it uses as much as digits as its factorization.

1201021963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 1201021963 is about 34655.7637774729. The cubic root of 1201021963 is about 1062.9601496253.

Adding to 1201021963 its reverse (3691201021), we get a palindrome (4892222984).

The spelling of 1201021963 in words is "one billion, two hundred one million, twenty-one thousand, nine hundred sixty-three".