2001421141243 has 2 divisors, whose sum is σ = 2001421141244. Its totient is φ = 2001421141242.

The previous prime is 2001421141241. The next prime is 2001421141283. The reversal of 2001421141243 is 3421411241002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2001421141243 - 2¹ = 2001421141241 is a prime.

It is a super-2 number, since 2×2001421141243² (a number of 25 digits) contains 22 as substring.

Together with 2001421141241, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2001421141241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000710570621 + 1000710570622.

It is an arithmetic number, because the mean of its divisors is an integer number (1000710570622).

Almost surely, 2^{2001421141243} is an apocalyptic number.

2001421141243 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001421141243 is an equidigital number, since it uses as much as digits as its factorization.

2001421141243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 2001421141243 its reverse (3421411241002), we get a palindrome (5422832382245).

The spelling of 2001421141243 in words is "two trillion, one billion, four hundred twenty-one million, one hundred forty-one thousand, two hundred forty-three".