1020002013203 has 4 divisors (see below), whose sum is σ = 1044880111128. Its totient is φ = 995123915280.

The previous prime is 1020002013187. The next prime is 1020002013209. The reversal of 1020002013203 is 3023102000201.

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 1020002013203 - 2⁴ = 1020002013187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020002013209) 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, 12439048901 + ... + 12439048982.

It is an arithmetic number, because the mean of its divisors is an integer number (261220027782).

Almost surely, 2^{1020002013203} is an apocalyptic number.

1020002013203 is a deficient number, since it is larger than the sum of its proper divisors (24878097925).

1020002013203 is an equidigital number, since it uses as much as digits as its factorization.

1020002013203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24878097924.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 1020002013203 its reverse (3023102000201), we get a palindrome (4043104013404).

The spelling of 1020002013203 in words is "one trillion, twenty billion, two million, thirteen thousand, two hundred three".