2001222202032 has 160 divisors (see below), whose sum is σ = 5847435264000. Its totient is φ = 655179632640.

The previous prime is 2001222202013. The next prime is 2001222202039. The reversal of 2001222202032 is 2302022221002.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2001222201996 and 2001222202014.

It is not an unprimeable number, because it can be changed into a prime (2001222202039) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6364944 + ... + 6671952.

It is an arithmetic number, because the mean of its divisors is an integer number (36546470400).

Almost surely, 2^{2001222202032} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2001222202032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2923717632000).

2001222202032 is an abundant number, since it is smaller than the sum of its proper divisors (3846213061968).

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

2001222202032 is a wasteful number, since it uses less digits than its factorization.

2001222202032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307296 (or 307284 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 2001222202032 its reverse (2302022221002), we get a palindrome (4303244423034).

The spelling of 2001222202032 in words is "two trillion, one billion, two hundred twenty-two million, two hundred two thousand, thirty-two".