2001002002220 has 48 divisors (see below), whose sum is σ = 4525448729088. Its totient is φ = 738814245120.

The previous prime is 2001002002037. The next prime is 2001002002229. The reversal of 2001002002220 is 222002001002.

It is not an unprimeable number, because it can be changed into a prime (2001002002229) 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, 18199010 + ... + 18308630.

It is an arithmetic number, because the mean of its divisors is an integer number (94280181856).

Almost surely, 2^{2001002002220} is an apocalyptic number.

2001002002220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001002002220 is an abundant number, since it is smaller than the sum of its proper divisors (2524446726868).

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

2001002002220 is a wasteful number, since it uses less digits than its factorization.

2001002002220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179850 (or 179848 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 2001002002220 its reverse (222002001002), we get a palindrome (2223004003222).

The spelling of 2001002002220 in words is "two trillion, one billion, two million, two thousand, two hundred twenty".