1021203500453 has 2 divisors, whose sum is σ = 1021203500454. Its totient is φ = 1021203500452.

The previous prime is 1021203500423. The next prime is 1021203500467. The reversal of 1021203500453 is 3540053021201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1014447811204 + 6755689249 = 1007198^2 + 82193^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021203500453 - 2⁸ = 1021203500197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021203500423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510601750226 + 510601750227.

It is an arithmetic number, because the mean of its divisors is an integer number (510601750227).

Almost surely, 2^{1021203500453} is an apocalyptic number.

It is an amenable number.

1021203500453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021203500453 is an equidigital number, since it uses as much as digits as its factorization.

1021203500453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 1021203500453 its reverse (3540053021201), we get a palindrome (4561256521654).

The spelling of 1021203500453 in words is "one trillion, twenty-one billion, two hundred three million, five hundred thousand, four hundred fifty-three".