2001021010103 has 2 divisors, whose sum is σ = 2001021010104. Its totient is φ = 2001021010102.

The previous prime is 2001021010099. The next prime is 2001021010189. The reversal of 2001021010103 is 3010101201002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2001021010103 - 2² = 2001021010099 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001021010603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000510505051 + 1000510505052.

It is an arithmetic number, because the mean of its divisors is an integer number (1000510505052).

Almost surely, 2^{2001021010103} is an apocalyptic number.

2001021010103 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001021010103 is an equidigital number, since it uses as much as digits as its factorization.

2001021010103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 2001021010103 its reverse (3010101201002), we get a palindrome (5011122211105).

The spelling of 2001021010103 in words is "two trillion, one billion, twenty-one million, ten thousand, one hundred three".