1201001221963 has 2 divisors, whose sum is σ = 1201001221964. Its totient is φ = 1201001221962.

The previous prime is 1201001221961. The next prime is 1201001221997. The reversal of 1201001221963 is 3691221001021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1201001221963 - 2¹ = 1201001221961 is a prime.

Together with 1201001221961, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1201001221961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600500610981 + 600500610982.

It is an arithmetic number, because the mean of its divisors is an integer number (600500610982).

Almost surely, 2^{1201001221963} is an apocalyptic number.

1201001221963 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201001221963 is an equidigital number, since it uses as much as digits as its factorization.

1201001221963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 28.

Adding to 1201001221963 its reverse (3691221001021), we get a palindrome (4892222222984).

The spelling of 1201001221963 in words is "one trillion, two hundred one billion, one million, two hundred twenty-one thousand, nine hundred sixty-three".