2001220101103 has 2 divisors, whose sum is σ = 2001220101104. Its totient is φ = 2001220101102.

The previous prime is 2001220101073. The next prime is 2001220101119. The reversal of 2001220101103 is 3011010221002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2001220101103 - 2⁹ = 2001220100591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001220161103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000610050551 + 1000610050552.

It is an arithmetic number, because the mean of its divisors is an integer number (1000610050552).

Almost surely, 2^{2001220101103} is an apocalyptic number.

2001220101103 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001220101103 is an equidigital number, since it uses as much as digits as its factorization.

2001220101103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 2001220101103 its reverse (3011010221002), we get a palindrome (5012230322105).

The spelling of 2001220101103 in words is "two trillion, one billion, two hundred twenty million, one hundred one thousand, one hundred three".