1005202020202 has 4 divisors (see below), whose sum is σ = 1507803030306. Its totient is φ = 502601010100.

The previous prime is 1005202020197. The next prime is 1005202020257. The reversal of 1005202020202 is 2020202025001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 937664925561 + 67537094641 = 968331^2 + 259879^2 .

It is a super-2 number, since 2×1005202020202² (a number of 25 digits) contains 22 as substring.

1005202020202 is a modest number, since divided by 2020202 gives 10052 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251300505049 + ... + 251300505052.

Almost surely, 2^{1005202020202} is an apocalyptic number.

1005202020202 is a deficient number, since it is larger than the sum of its proper divisors (502601010104).

1005202020202 is an equidigital number, since it uses as much as digits as its factorization.

1005202020202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502601010103.

The product of its (nonzero) digits is 160, while the sum is 16.

Adding to 1005202020202 its reverse (2020202025001), we get a palindrome (3025404045203).

The spelling of 1005202020202 in words is "one trillion, five billion, two hundred two million, twenty thousand, two hundred two".