1021303012303 has 4 divisors (see below), whose sum is σ = 1167203442640. Its totient is φ = 875402581968.

The previous prime is 1021303012267. The next prime is 1021303012307. The reversal of 1021303012303 is 3032103031201.

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 1021303012303 - 2²⁹ = 1020766141391 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 (1021303012307) 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, 72950215158 + ... + 72950215171.

It is an arithmetic number, because the mean of its divisors is an integer number (291800860660).

Almost surely, 2^{1021303012303} is an apocalyptic number.

1021303012303 is a deficient number, since it is larger than the sum of its proper divisors (145900430337).

1021303012303 is an equidigital number, since it uses as much as digits as its factorization.

1021303012303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145900430336.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 1021303012303 its reverse (3032103031201), we get a palindrome (4053406043504).

The spelling of 1021303012303 in words is "one trillion, twenty-one billion, three hundred three million, twelve thousand, three hundred three".