2001012122202 has 32 divisors (see below), whose sum is σ = 4054455345600. Its totient is φ = 658313146368.

The previous prime is 2001012122183. The next prime is 2001012122209. The reversal of 2001012122202 is 2022212101002.

It is not an unprimeable number, because it can be changed into a prime (2001012122209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5784552 + ... + 6120707.

It is an arithmetic number, because the mean of its divisors is an integer number (126701729550).

Almost surely, 2^{2001012122202} is an apocalyptic number.

2001012122202 is an abundant number, since it is smaller than the sum of its proper divisors (2053443223398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2001012122202 is a wasteful number, since it uses less digits than its factorization.

2001012122202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11905630.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2001012122202 its reverse (2022212101002), we get a palindrome (4023224223204).

The spelling of 2001012122202 in words is "two trillion, one billion, twelve million, one hundred twenty-two thousand, two hundred two".