10878121 has 4 divisors (see below), whose sum is σ = 10897744. Its totient is φ = 10858500.

The previous prime is 10878073. The next prime is 10878151. The reversal of 10878121 is 12187801.

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: 12187801 = 29 ⋅420269.

It is a cyclic number.

It is not a de Polignac number, because 10878121 - 2¹⁵ = 10845353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10878121.

It is not an unprimeable number, because it can be changed into a prime (10878151) 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, 8955 + ... + 10096.

It is an arithmetic number, because the mean of its divisors is an integer number (2724436).

Almost surely, 2^10878121 is an apocalyptic number.

It is an amenable number.

10878121 is a deficient number, since it is larger than the sum of its proper divisors (19623).

10878121 is an equidigital number, since it uses as much as digits as its factorization.

10878121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19622.

The product of its (nonzero) digits is 896, while the sum is 28.

The square root of 10878121 is about 3298.1996604208. The cubic root of 10878121 is about 221.5735733864.

The spelling of 10878121 in words is "ten million, eight hundred seventy-eight thousand, one hundred twenty-one".