2001211001963 has 2 divisors, whose sum is σ = 2001211001964. Its totient is φ = 2001211001962.

The previous prime is 2001211001953. The next prime is 2001211002031. The reversal of 2001211001963 is 3691001121002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2001211001963 - 2³² = 1996916034667 is a prime.

It is not a weakly prime, because it can be changed into another prime (2001211001953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000605500981 + 1000605500982.

It is an arithmetic number, because the mean of its divisors is an integer number (1000605500982).

Almost surely, 2^{2001211001963} is an apocalyptic number.

2001211001963 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001211001963 is an equidigital number, since it uses as much as digits as its factorization.

2001211001963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 26.

Adding to 2001211001963 its reverse (3691001121002), we get a palindrome (5692212122965).

The spelling of 2001211001963 in words is "two trillion, one billion, two hundred eleven million, one thousand, nine hundred sixty-three".