10821071 has 4 divisors (see below), whose sum is σ = 10859592. Its totient is φ = 10782552.

The previous prime is 10821067. The next prime is 10821073. The reversal of 10821071 is 17012801.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10821071 - 2² = 10821067 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 (10821073) 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, 18836 + ... + 19401.

It is an arithmetic number, because the mean of its divisors is an integer number (2714898).

Almost surely, 2^10821071 is an apocalyptic number.

10821071 is a deficient number, since it is larger than the sum of its proper divisors (38521).

10821071 is an equidigital number, since it uses as much as digits as its factorization.

10821071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38520.

The product of its (nonzero) digits is 112, while the sum is 20.

The square root of 10821071 is about 3289.5396334442. The cubic root of 10821071 is about 221.1855488054.

Adding to 10821071 its reverse (17012801), we get a palindrome (27833872).

The spelling of 10821071 in words is "ten million, eight hundred twenty-one thousand, seventy-one".