1021240004453 has 2 divisors, whose sum is σ = 1021240004454. Its totient is φ = 1021240004452.

The previous prime is 1021240004371. The next prime is 1021240004459. The reversal of 1021240004453 is 3544000421201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 987751736449 + 33488268004 = 993857^2 + 182998^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021240004453 - 2¹⁸ = 1021239742309 is a prime.

It is a super-2 number, since 2×1021240004453² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021240004459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510620002226 + 510620002227.

It is an arithmetic number, because the mean of its divisors is an integer number (510620002227).

Almost surely, 2^{1021240004453} is an apocalyptic number.

It is an amenable number.

1021240004453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021240004453 is an equidigital number, since it uses as much as digits as its factorization.

1021240004453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 1021240004453 its reverse (3544000421201), we get a palindrome (4565240425654).

The spelling of 1021240004453 in words is "one trillion, twenty-one billion, two hundred forty million, four thousand, four hundred fifty-three".