1031020020202 has 4 divisors (see below), whose sum is σ = 1546530030306. Its totient is φ = 515510010100.

The previous prime is 1031020020197. The next prime is 1031020020209. The reversal of 1031020020202 is 2020200201301.

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., 975158225001 + 55861795201 = 987501^2 + 236351^2 .

It is not an unprimeable number, because it can be changed into a prime (1031020020209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257755005049 + ... + 257755005052.

Almost surely, 2^{1031020020202} is an apocalyptic number.

1031020020202 is a deficient number, since it is larger than the sum of its proper divisors (515510010104).

1031020020202 is an equidigital number, since it uses as much as digits as its factorization.

1031020020202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515510010103.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 1031020020202 its reverse (2020200201301), we get a palindrome (3051220221503).

The spelling of 1031020020202 in words is "one trillion, thirty-one billion, twenty million, twenty thousand, two hundred two".