1020200000202 has 12 divisors (see below), whose sum is σ = 2210433333810. Its totient is φ = 340066666728.

The previous prime is 1020200000159. The next prime is 1020200000231. The reversal of 1020200000202 is 2020000020201.

It can be written as a sum of positive squares in only one way, i.e., 826319178441 + 193880821761 = 909021^2 + 440319^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

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 5 ways as a sum of consecutive naturals, for example, 28338888877 + ... + 28338888912.

Almost surely, 2^{1020200000202} is an apocalyptic number.

1020200000202 is an abundant number, since it is smaller than the sum of its proper divisors (1190233333608).

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

1020200000202 is a wasteful number, since it uses less digits than its factorization.

1020200000202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56677777797 (or 56677777794 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 1020200000202 its reverse (2020000020201), we get a palindrome (3040200020403).

The spelling of 1020200000202 in words is "one trillion, twenty billion, two hundred million, two hundred two", and thus it is an aban number.