1224021354253 has 2 divisors, whose sum is σ = 1224021354254. Its totient is φ = 1224021354252.

The previous prime is 1224021354223. The next prime is 1224021354287. The reversal of 1224021354253 is 3524531204221.

It is an a-pointer prime, because the next prime (1224021354287) can be obtained adding 1224021354253 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 922210661124 + 301810693129 = 960318^2 + 549373^2 .

It is a cyclic number.

It is not a de Polignac number, because 1224021354253 - 2²⁵ = 1223987799821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1224021354223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612010677126 + 612010677127.

It is an arithmetic number, because the mean of its divisors is an integer number (612010677127).

Almost surely, 2^{1224021354253} is an apocalyptic number.

It is an amenable number.

1224021354253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224021354253 is an equidigital number, since it uses as much as digits as its factorization.

1224021354253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 1224021354253 its reverse (3524531204221), we get a palindrome (4748552558474).

The spelling of 1224021354253 in words is "one trillion, two hundred twenty-four billion, twenty-one million, three hundred fifty-four thousand, two hundred fifty-three".