12921050 has 12 divisors (see below), whose sum is σ = 24033246. Its totient is φ = 5168400.

The previous prime is 12921049. The next prime is 12921053. The reversal of 12921050 is 5012921.

It can be written as a sum of positive squares in 3 ways, for example, as 6775609 + 6145441 = 2603^2 + 2479^2 .

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12921053) 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 5 ways as a sum of consecutive naturals, for example, 129161 + ... + 129260.

Almost surely, 2^12921050 is an apocalyptic number.

12921050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12921050 is a deficient number, since it is larger than the sum of its proper divisors (11112196).

12921050 is a wasteful number, since it uses less digits than its factorization.

12921050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258433 (or 258428 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 12921050 is about 3594.5862070619. The cubic root of 12921050 is about 234.6565073763.

Adding to 12921050 its reverse (5012921), we get a palindrome (17933971).

The spelling of 12921050 in words is "twelve million, nine hundred twenty-one thousand, fifty".