21310432103111 has 4 divisors (see below), whose sum is σ = 21712515727752. Its totient is φ = 20908348478472.

The previous prime is 21310432103087. The next prime is 21310432103117. The reversal of 21310432103111 is 11130123401312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21310432103111 is a prime.

It is a super-3 number, since 3×21310432103111³ (a number of 41 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 (21310432103117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201041812241 + ... + 201041812346.

It is an arithmetic number, because the mean of its divisors is an integer number (5428128931938).

Almost surely, 2^{21310432103111} is an apocalyptic number.

21310432103111 is a deficient number, since it is larger than the sum of its proper divisors (402083624641).

21310432103111 is an equidigital number, since it uses as much as digits as its factorization.

21310432103111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402083624640.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 21310432103111 its reverse (11130123401312), we get a palindrome (32440555504423).

The spelling of 21310432103111 in words is "twenty-one trillion, three hundred ten billion, four hundred thirty-two million, one hundred three thousand, one hundred eleven".