2001002010220 has 24 divisors (see below), whose sum is σ = 4225579671600. Its totient is φ = 795929289792.

The previous prime is 2001002010209. The next prime is 2001002010229. The reversal of 2001002010220 is 220102001002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 2001002010197 and 2001002010206.

It is not an unprimeable number, because it can be changed into a prime (2001002010229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279465975 + ... + 279473134.

It is an arithmetic number, because the mean of its divisors is an integer number (176065819650).

Almost surely, 2^{2001002010220} is an apocalyptic number.

2001002010220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001002010220 is an abundant number, since it is smaller than the sum of its proper divisors (2224577661380).

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

2001002010220 is a wasteful number, since it uses less digits than its factorization.

2001002010220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558939297 (or 558939295 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 2001002010220 its reverse (220102001002), we get a palindrome (2221104011222).

The spelling of 2001002010220 in words is "two trillion, one billion, two million, ten thousand, two hundred twenty".