1002120512453 has 2 divisors, whose sum is σ = 1002120512454. Its totient is φ = 1002120512452.

The previous prime is 1002120512417. The next prime is 1002120512467. The reversal of 1002120512453 is 3542150212001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 802246245124 + 199874267329 = 895682^2 + 447073^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002120512453 - 2¹⁶ = 1002120446917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002120512153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501060256226 + 501060256227.

It is an arithmetic number, because the mean of its divisors is an integer number (501060256227).

Almost surely, 2^{1002120512453} is an apocalyptic number.

It is an amenable number.

1002120512453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002120512453 is an equidigital number, since it uses as much as digits as its factorization.

1002120512453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 1002120512453 its reverse (3542150212001), we get a palindrome (4544270724454).

The spelling of 1002120512453 in words is "one trillion, two billion, one hundred twenty million, five hundred twelve thousand, four hundred fifty-three".