2001220011983 has 2 divisors, whose sum is σ = 2001220011984. Its totient is φ = 2001220011982.

The previous prime is 2001220011949. The next prime is 2001220012013. The reversal of 2001220011983 is 3891100221002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2001220011983 - 2⁶ = 2001220011919 is a prime.

It is a super-2 number, since 2×2001220011983² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001220019983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000610005991 + 1000610005992.

It is an arithmetic number, because the mean of its divisors is an integer number (1000610005992).

Almost surely, 2^{2001220011983} is an apocalyptic number.

2001220011983 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001220011983 is an equidigital number, since it uses as much as digits as its factorization.

2001220011983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

Adding to 2001220011983 its reverse (3891100221002), we get a palindrome (5892320232985).

The spelling of 2001220011983 in words is "two trillion, one billion, two hundred twenty million, eleven thousand, nine hundred eighty-three".