2001212031023 has 2 divisors, whose sum is σ = 2001212031024. Its totient is φ = 2001212031022.

The previous prime is 2001212031011. The next prime is 2001212031029. The reversal of 2001212031023 is 3201302121002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2001212031023 - 2¹⁸ = 2001211768879 is a prime.

It is a super-2 number, since 2×2001212031023² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 2001212030992 and 2001212031010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001212031029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000606015511 + 1000606015512.

It is an arithmetic number, because the mean of its divisors is an integer number (1000606015512).

Almost surely, 2^{2001212031023} is an apocalyptic number.

2001212031023 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001212031023 is an equidigital number, since it uses as much as digits as its factorization.

2001212031023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 2001212031023 its reverse (3201302121002), we get a palindrome (5202514152025).

The spelling of 2001212031023 in words is "two trillion, one billion, two hundred twelve million, thirty-one thousand, twenty-three".