2001101222220 has 24 divisors (see below), whose sum is σ = 5603083422384. Its totient is φ = 533626992576.

The previous prime is 2001101222201. The next prime is 2001101222227. The reversal of 2001101222220 is 222221011002.

It is a super-2 number, since 2×2001101222220² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2001101222220.

It is not an unprimeable number, because it can be changed into a prime (2001101222227) 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 7 ways as a sum of consecutive naturals, for example, 16675843459 + ... + 16675843578.

It is an arithmetic number, because the mean of its divisors is an integer number (233461809266).

Almost surely, 2^{2001101222220} is an apocalyptic number.

2001101222220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001101222220 is an abundant number, since it is smaller than the sum of its proper divisors (3601982200164).

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

2001101222220 is a wasteful number, since it uses less digits than its factorization.

2001101222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33351687049 (or 33351687047 counting only the distinct ones).

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

Adding to 2001101222220 its reverse (222221011002), we get a palindrome (2223322233222).

The spelling of 2001101222220 in words is "two trillion, one billion, one hundred one million, two hundred twenty-two thousand, two hundred twenty".