1320020100253 has 2 divisors, whose sum is σ = 1320020100254. Its totient is φ = 1320020100252.

The previous prime is 1320020100229. The next prime is 1320020100317. The reversal of 1320020100253 is 3520010200231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1197146716164 + 122873384089 = 1094142^2 + 350533^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320020100253 - 2⁵ = 1320020100221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1320020100253.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320020700253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660010050126 + 660010050127.

It is an arithmetic number, because the mean of its divisors is an integer number (660010050127).

Almost surely, 2^{1320020100253} is an apocalyptic number.

It is an amenable number.

1320020100253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320020100253 is an equidigital number, since it uses as much as digits as its factorization.

1320020100253 is an evil number, because the sum of its binary digits is even.

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

Adding to 1320020100253 its reverse (3520010200231), we get a palindrome (4840030300484).

The spelling of 1320020100253 in words is "one trillion, three hundred twenty billion, twenty million, one hundred thousand, two hundred fifty-three".