2001202220971 has 2 divisors, whose sum is σ = 2001202220972. Its totient is φ = 2001202220970.

The previous prime is 2001202220909. The next prime is 2001202221001. The reversal of 2001202220971 is 1790222021002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2001202220971 - 2¹¹ = 2001202218923 is a prime.

It is a super-2 number, since 2×2001202220971² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2001202220371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000601110485 + 1000601110486.

It is an arithmetic number, because the mean of its divisors is an integer number (1000601110486).

Almost surely, 2^{2001202220971} is an apocalyptic number.

2001202220971 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001202220971 is an equidigital number, since it uses as much as digits as its factorization.

2001202220971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 28.

Adding to 2001202220971 its reverse (1790222021002), we get a palindrome (3791424241973).

The spelling of 2001202220971 in words is "two trillion, one billion, two hundred two million, two hundred twenty thousand, nine hundred seventy-one".