1001001222220 has 24 divisors (see below), whose sum is σ = 2106232455600. Its totient is φ = 399613843392.

The previous prime is 1001001222211. The next prime is 1001001222223. The reversal of 1001001222220 is 222221001001.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1001001222220.

It is not an unprimeable number, because it can be changed into a prime (1001001222223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49154910 + ... + 49175269.

It is an arithmetic number, because the mean of its divisors is an integer number (87759685650).

Almost surely, 2^{1001001222220} is an apocalyptic number.

1001001222220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001001222220 is an abundant number, since it is smaller than the sum of its proper divisors (1105231233380).

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

1001001222220 is a wasteful number, since it uses less digits than its factorization.

1001001222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98330697 (or 98330695 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1001001222220 its reverse (222221001001), we get a palindrome (1223222223221).

It can be divided in two parts, 1001001 and 222220, that added together give a palindrome (1223221).

The spelling of 1001001222220 in words is "one trillion, one billion, one million, two hundred twenty-two thousand, two hundred twenty".