10821811011 has 8 divisors (see below), whose sum is σ = 15740816064. Its totient is φ = 6558673320.

The previous prime is 10821811009. The next prime is 10821811027. The reversal of 10821811011 is 11011812801.

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

It is not a de Polignac number, because 10821811011 - 2¹ = 10821811009 is a prime.

It is a super-2 number, since 2×10821811011² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10821811031) 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, 163966801 + ... + 163966866.

It is an arithmetic number, because the mean of its divisors is an integer number (1967602008).

Almost surely, 2^10821811011 is an apocalyptic number.

10821811011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10821811011 is a deficient number, since it is larger than the sum of its proper divisors (4919005053).

10821811011 is a wasteful number, since it uses less digits than its factorization.

10821811011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327933681.

The product of its (nonzero) digits is 128, while the sum is 24.

The spelling of 10821811011 in words is "ten billion, eight hundred twenty-one million, eight hundred eleven thousand, eleven".