2001022010243 has 2 divisors, whose sum is σ = 2001022010244. Its totient is φ = 2001022010242.

The previous prime is 2001022010237. The next prime is 2001022010321. The reversal of 2001022010243 is 3420102201002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2001022010243 - 2⁶ = 2001022010179 is a prime.

It is not a weakly prime, because it can be changed into another prime (2001022012243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000511005121 + 1000511005122.

It is an arithmetic number, because the mean of its divisors is an integer number (1000511005122).

Almost surely, 2^{2001022010243} is an apocalyptic number.

2001022010243 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001022010243 is an equidigital number, since it uses as much as digits as its factorization.

2001022010243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 2001022010243 its reverse (3420102201002), we get a palindrome (5421124211245).

The spelling of 2001022010243 in words is "two trillion, one billion, twenty-two million, ten thousand, two hundred forty-three".