1002001222220 has 48 divisors (see below), whose sum is σ = 2141878747008. Its totient is φ = 393669642240.

The previous prime is 1002001222219. The next prime is 1002001222247. The reversal of 1002001222220 is 222221002001.

It is a junction number, because it is equal to n+sod(n) for n = 1002001222195 and 1002001222204.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1072004 + ... + 1775723.

It is an arithmetic number, because the mean of its divisors is an integer number (44622473896).

Almost surely, 2^{1002001222220} is an apocalyptic number.

1002001222220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002001222220 is an abundant number, since it is smaller than the sum of its proper divisors (1139877524788).

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

1002001222220 is a wasteful number, since it uses less digits than its factorization.

1002001222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2848050 (or 2848048 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 1002001222220 its reverse (222221002001), we get a palindrome (1224222224221).

It can be divided in two parts, 1002001 and 222220, that added together give a palindrome (1224221).

The spelling of 1002001222220 in words is "one trillion, two billion, one million, two hundred twenty-two thousand, two hundred twenty".