1020202021103 has 4 divisors (see below), whose sum is σ = 1020209277960. Its totient is φ = 1020194764248.

The previous prime is 1020202021063. The next prime is 1020202021109. The reversal of 1020202021103 is 3011202020201.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1020202021103 - 2¹² = 1020202017007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020202021109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3413300 + ... + 3700137.

It is an arithmetic number, because the mean of its divisors is an integer number (255052319490).

Almost surely, 2^{1020202021103} is an apocalyptic number.

1020202021103 is a deficient number, since it is larger than the sum of its proper divisors (7256857).

1020202021103 is an equidigital number, since it uses as much as digits as its factorization.

1020202021103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7256856.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 1020202021103 its reverse (3011202020201), we get a palindrome (4031404041304).

The spelling of 1020202021103 in words is "one trillion, twenty billion, two hundred two million, twenty-one thousand, one hundred three".