10921011911 has 4 divisors (see below), whose sum is σ = 11043720000. Its totient is φ = 10798303824.

The previous prime is 10921011889. The next prime is 10921011929. The reversal of 10921011911 is 11911012901.

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 10921011911 - 2¹⁰ = 10921010887 is a prime.

It is a super-3 number, since 3×10921011911³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10921011971) 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, 61353911 + ... + 61354088.

It is an arithmetic number, because the mean of its divisors is an integer number (2760930000).

Almost surely, 2^10921011911 is an apocalyptic number.

10921011911 is a deficient number, since it is larger than the sum of its proper divisors (122708089).

10921011911 is an equidigital number, since it uses as much as digits as its factorization.

10921011911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122708088.

The product of its (nonzero) digits is 162, while the sum is 26.

It can be divided in two parts, 109210 and 11911, that added together give a palindrome (121121).

The spelling of 10921011911 in words is "ten billion, nine hundred twenty-one million, eleven thousand, nine hundred eleven".