10821130 has 16 divisors (see below), whose sum is σ = 19953864. Its totient is φ = 4222720.

The previous prime is 10821121. The next prime is 10821133. The reversal of 10821130 is 3112801.

10821130 = 120² + 121² + ... + 324².

It can be written as a sum of positive squares in 4 ways, for example, as 5489649 + 5331481 = 2343^2 + 2309^2 .

It is not an unprimeable number, because it can be changed into a prime (10821133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12787 + ... + 13606.

Almost surely, 2^10821130 is an apocalyptic number.

10821130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10821130 is a deficient number, since it is larger than the sum of its proper divisors (9132734).

10821130 is a wasteful number, since it uses less digits than its factorization.

10821130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26441.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 10821130 is about 3289.5486012522. The cubic root of 10821130 is about 221.1859507965.

Adding to 10821130 its reverse (3112801), we get a palindrome (13933931).

It can be divided in two parts, 108211 and 30, that added together give a square (108241 = 329²).

The spelling of 10821130 in words is "ten million, eight hundred twenty-one thousand, one hundred thirty".