1020342220203 has 4 divisors (see below), whose sum is σ = 1360456293608. Its totient is φ = 680228146800.

The previous prime is 1020342220171. The next prime is 1020342220213. The reversal of 1020342220203 is 3020222430201.

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

It is not a de Polignac number, because 1020342220203 - 2⁵ = 1020342220171 is a prime.

It is a super-2 number, since 2×1020342220203² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1020342220203.

It is not an unprimeable number, because it can be changed into a prime (1020342220213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170057036698 + ... + 170057036703.

It is an arithmetic number, because the mean of its divisors is an integer number (340114073402).

Almost surely, 2^{1020342220203} is an apocalyptic number.

1020342220203 is a deficient number, since it is larger than the sum of its proper divisors (340114073405).

1020342220203 is an equidigital number, since it uses as much as digits as its factorization.

1020342220203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340114073404.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 1020342220203 its reverse (3020222430201), we get a palindrome (4040564650404).

The spelling of 1020342220203 in words is "one trillion, twenty billion, three hundred forty-two million, two hundred twenty thousand, two hundred three".