2001001022071 has 2 divisors, whose sum is σ = 2001001022072. Its totient is φ = 2001001022070.

The previous prime is 2001001022063. The next prime is 2001001022131. The reversal of 2001001022071 is 1702201001002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2001001022071 - 2³ = 2001001022063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001001022021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000500511035 + 1000500511036.

It is an arithmetic number, because the mean of its divisors is an integer number (1000500511036).

Almost surely, 2^{2001001022071} is an apocalyptic number.

2001001022071 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001001022071 is an equidigital number, since it uses as much as digits as its factorization.

2001001022071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 16.

Adding to 2001001022071 its reverse (1702201001002), we get a palindrome (3703202023073).

The spelling of 2001001022071 in words is "two trillion, one billion, one million, twenty-two thousand, seventy-one".