10821712811 has 32 divisors (see below), whose sum is σ = 13469998080. Its totient is φ = 8465710464.

The previous prime is 10821712807. The next prime is 10821712849. The reversal of 10821712811 is 11821712801.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 10821712811 - 2² = 10821712807 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10821712511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3325061 + ... + 3328313.

It is an arithmetic number, because the mean of its divisors is an integer number (420937440).

Almost surely, 2^10821712811 is an apocalyptic number.

10821712811 is a deficient number, since it is larger than the sum of its proper divisors (2648285269).

10821712811 is a wasteful number, since it uses less digits than its factorization.

10821712811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3675.

The product of its (nonzero) digits is 1792, while the sum is 32.

The spelling of 10821712811 in words is "ten billion, eight hundred twenty-one million, seven hundred twelve thousand, eight hundred eleven".