1002202001020 has 24 divisors (see below), whose sum is σ = 2295953675568. Its totient is φ = 364437091200.

The previous prime is 1002202000999. The next prime is 1002202001051. The reversal of 1002202001020 is 201002022001.

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 = 1002202000988 and 1002202001006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2277731601 + ... + 2277732040.

It is an arithmetic number, because the mean of its divisors is an integer number (95664736482).

Almost surely, 2^{1002202001020} is an apocalyptic number.

1002202001020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002202001020 is an abundant number, since it is smaller than the sum of its proper divisors (1293751674548).

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

1002202001020 is a wasteful number, since it uses less digits than its factorization.

1002202001020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4555463661 (or 4555463659 counting only the distinct ones).

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

Adding to 1002202001020 its reverse (201002022001), we get a palindrome (1203204023021).

The spelling of 1002202001020 in words is "one trillion, two billion, two hundred two million, one thousand, twenty".