1020203202002 has 16 divisors (see below), whose sum is σ = 1545878221272. Its totient is φ = 504913219200.

The previous prime is 1020203202001. The next prime is 1020203202043. The reversal of 1020203202002 is 2002023020201.

It can be written as a sum of positive squares in 4 ways, for example, as 675517966201 + 344685235801 = 821899^2 + 587099^2 .

It is not an unprimeable number, because it can be changed into a prime (1020203202001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54428 + ... + 1429464.

Almost surely, 2^{1020203202002} is an apocalyptic number.

1020203202002 is a deficient number, since it is larger than the sum of its proper divisors (525675019270).

1020203202002 is a wasteful number, since it uses less digits than its factorization.

1020203202002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378813.

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 1020203202002 its reverse (2002023020201), we get a palindrome (3022226222203).

The spelling of 1020203202002 in words is "one trillion, twenty billion, two hundred three million, two hundred two thousand, two".