1020230021503 has 24 divisors (see below), whose sum is σ = 1296232640640. Its totient is φ = 794036542320.

The previous prime is 1020230021497. The next prime is 1020230021513. The reversal of 1020230021503 is 3051200320201.

It is a de Polignac number, because none of the positive numbers 2^k-1020230021503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020230021513) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 675801 + ... + 1580242.

It is an arithmetic number, because the mean of its divisors is an integer number (54009693360).

Almost surely, 2^{1020230021503} is an apocalyptic number.

1020230021503 is a deficient number, since it is larger than the sum of its proper divisors (276002619137).

1020230021503 is a wasteful number, since it uses less digits than its factorization.

1020230021503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256907 (or 2256900 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

Adding to 1020230021503 its reverse (3051200320201), we get a palindrome (4071430341704).

The spelling of 1020230021503 in words is "one trillion, twenty billion, two hundred thirty million, twenty-one thousand, five hundred three".