12953035921 has 4 divisors (see below), whose sum is σ = 14803469632. Its totient is φ = 11102602212.

The previous prime is 12953035883. The next prime is 12953035969.

12953035921 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12953035921 - 2¹⁷ = 12952904849 is a prime.

It is a super-2 number, since 2×12953035921² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12953035421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 925216845 + ... + 925216858.

It is an arithmetic number, because the mean of its divisors is an integer number (3700867408).

Almost surely, 2^12953035921 is an apocalyptic number.

It is an amenable number.

12953035921 is a deficient number, since it is larger than the sum of its proper divisors (1850433711).

12953035921 is an equidigital number, since it uses as much as digits as its factorization.

12953035921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1850433710.

The product of its (nonzero) digits is 72900, while the sum is 40.

The spelling of 12953035921 in words is "twelve billion, nine hundred fifty-three million, thirty-five thousand, nine hundred twenty-one".