10821801 has 8 divisors (see below), whose sum is σ = 14503104. Its totient is φ = 7177520.

The previous prime is 10821781. The next prime is 10821829. The reversal of 10821801 is 10812801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10821801 - 2¹⁸ = 10559657 is a prime.

It is a super-2 number, since 2×10821801² = 234222753767202, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10821851) 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, 8565 + ... + 9746.

It is an arithmetic number, because the mean of its divisors is an integer number (1812888).

Almost surely, 2^10821801 is an apocalyptic number.

It is an amenable number.

10821801 is a deficient number, since it is larger than the sum of its proper divisors (3681303).

10821801 is a wasteful number, since it uses less digits than its factorization.

10821801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18511.

The product of its (nonzero) digits is 128, while the sum is 21.

The square root of 10821801 is about 3289.6505893484. The cubic root of 10821801 is about 221.1905224911.

The spelling of 10821801 in words is "ten million, eight hundred twenty-one thousand, eight hundred one".