12954821 has 4 divisors (see below), whose sum is σ = 14132544. Its totient is φ = 11777100.

The previous prime is 12954817. The next prime is 12954829. The reversal of 12954821 is 12845921.

12954821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12845921 = 11 ⋅1167811.

It is a cyclic number.

It is not a de Polignac number, because 12954821 - 2² = 12954817 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 (12954829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 588845 + ... + 588866.

It is an arithmetic number, because the mean of its divisors is an integer number (3533136).

Almost surely, 2^12954821 is an apocalyptic number.

12954821 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12954821 is a deficient number, since it is larger than the sum of its proper divisors (1177723).

12954821 is a wasteful number, since it uses less digits than its factorization.

12954821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177722.

The product of its digits is 5760, while the sum is 32.

The square root of 12954821 is about 3599.2806225689. The cubic root of 12954821 is about 234.8607655676.

Subtracting from 12954821 its reverse (12845921), we obtain a square (108900 = 330²).

It can be divided in two parts, 1295 and 4821, that added together give a palindrome (6116).

The spelling of 12954821 in words is "twelve million, nine hundred fifty-four thousand, eight hundred twenty-one".