12921053 has 2 divisors, whose sum is σ = 12921054. Its totient is φ = 12921052.

The previous prime is 12921049. The next prime is 12921061. The reversal of 12921053 is 35012921.

12921053 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9972964 + 2948089 = 3158^2 + 1717^2 .

It is a cyclic number.

It is not a de Polignac number, because 12921053 - 2² = 12921049 is a prime.

It is a super-2 number, since 2×12921053² = 333907221257618, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12927053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6460526 + 6460527.

It is an arithmetic number, because the mean of its divisors is an integer number (6460527).

Almost surely, 2^12921053 is an apocalyptic number.

It is an amenable number.

12921053 is a deficient number, since it is larger than the sum of its proper divisors (1).

12921053 is an equidigital number, since it uses as much as digits as its factorization.

12921053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 12921053 is about 3594.5866243561. The cubic root of 12921053 is about 234.6565255371.

Adding to 12921053 its reverse (35012921), we get a palindrome (47933974).

The spelling of 12921053 in words is "twelve million, nine hundred twenty-one thousand, fifty-three".