1002221223020 has 24 divisors (see below), whose sum is σ = 2105049071664. Its totient is φ = 400815250496.

The previous prime is 1002221222987. The next prime is 1002221223061. The reversal of 1002221223020 is 203221222001.

It is a self number, because there is not a number n which added to its sum of digits gives 1002221223020.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4465142 + ... + 4684221.

It is an arithmetic number, because the mean of its divisors is an integer number (87710377986).

Almost surely, 2^{1002221223020} is an apocalyptic number.

1002221223020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002221223020 is an abundant number, since it is smaller than the sum of its proper divisors (1102827848644).

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

1002221223020 is a wasteful number, since it uses less digits than its factorization.

1002221223020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9154849 (or 9154847 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 1002221223020 its reverse (203221222001), we get a palindrome (1205442445021).

The spelling of 1002221223020 in words is "one trillion, two billion, two hundred twenty-one million, two hundred twenty-three thousand, twenty".