2001222202001 has 16 divisors (see below), whose sum is σ = 2205111662208. Its totient is φ = 1801005024000.

The previous prime is 2001222201911. The next prime is 2001222202013. The reversal of 2001222202001 is 1002022221002.

It is a cyclic number.

It is not a de Polignac number, because 2001222202001 - 2³⁴ = 1984042332817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001222202081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2977451 + ... + 3587151.

It is an arithmetic number, because the mean of its divisors is an integer number (137819478888).

Almost surely, 2^{2001222202001} is an apocalyptic number.

It is an amenable number.

2001222202001 is a deficient number, since it is larger than the sum of its proper divisors (203889460207).

2001222202001 is a wasteful number, since it uses less digits than its factorization.

2001222202001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612712.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 2001222202001 its reverse (1002022221002), we get a palindrome (3003244423003).

The spelling of 2001222202001 in words is "two trillion, one billion, two hundred twenty-two million, two hundred two thousand, one".