1320021422453 has 2 divisors, whose sum is σ = 1320021422454. Its totient is φ = 1320021422452.

The previous prime is 1320021422441. The next prime is 1320021422483. The reversal of 1320021422453 is 3542241200231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1193508180484 + 126513241969 = 1092478^2 + 355687^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320021422453 - 2¹⁶ = 1320021356917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320021422483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660010711226 + 660010711227.

It is an arithmetic number, because the mean of its divisors is an integer number (660010711227).

Almost surely, 2^{1320021422453} is an apocalyptic number.

It is an amenable number.

1320021422453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320021422453 is an equidigital number, since it uses as much as digits as its factorization.

1320021422453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 1320021422453 its reverse (3542241200231), we get a palindrome (4862262622684).

The spelling of 1320021422453 in words is "one trillion, three hundred twenty billion, twenty-one million, four hundred twenty-two thousand, four hundred fifty-three".