21032101113 has 4 divisors (see below), whose sum is σ = 28042801488. Its totient is φ = 14021400740.

The previous prime is 21032101093. The next prime is 21032101177. The reversal of 21032101113 is 31110123012.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21032101113 - 2⁹ = 21032100601 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21032101092 and 21032101101.

It is not an unprimeable number, because it can be changed into a prime (21032101193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3505350183 + ... + 3505350188.

It is an arithmetic number, because the mean of its divisors is an integer number (7010700372).

Almost surely, 2^21032101113 is an apocalyptic number.

It is an amenable number.

21032101113 is a deficient number, since it is larger than the sum of its proper divisors (7010700375).

21032101113 is an equidigital number, since it uses as much as digits as its factorization.

21032101113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7010700374.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 21032101113 its reverse (31110123012), we get a palindrome (52142224125).

The spelling of 21032101113 in words is "twenty-one billion, thirty-two million, one hundred one thousand, one hundred thirteen".