12021301253 has 4 divisors (see below), whose sum is σ = 12946016748. Its totient is φ = 11096585760.

The previous prime is 12021301247. The next prime is 12021301291. The reversal of 12021301253 is 35210312021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 542750209 + 11478551044 = 23297^2 + 107138^2 .

It is not a de Polignac number, because 12021301253 - 2⁶ = 12021301189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021301753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 462357728 + ... + 462357753.

It is an arithmetic number, because the mean of its divisors is an integer number (3236504187).

Almost surely, 2^12021301253 is an apocalyptic number.

12021301253 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12021301253 is a deficient number, since it is larger than the sum of its proper divisors (924715495).

12021301253 is an equidigital number, since it uses as much as digits as its factorization.

12021301253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924715494.

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 12021301253 its reverse (35210312021), we get a palindrome (47231613274).

The spelling of 12021301253 in words is "twelve billion, twenty-one million, three hundred one thousand, two hundred fifty-three".