21320301113 has 16 divisors (see below), whose sum is σ = 22430327760. Its totient is φ = 20235667200.

The previous prime is 21320301089. The next prime is 21320301127. The reversal of 21320301113 is 31110302312.

It can be written as a sum of positive squares in 8 ways, for example, as 3312808249 + 18007492864 = 57557^2 + 134192^2 .

It is a cyclic number.

It is not a de Polignac number, because 21320301113 - 2¹² = 21320297017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21320301091 and 21320301100.

It is not an unprimeable number, because it can be changed into a prime (21320301133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4846631 + ... + 4851027.

It is an arithmetic number, because the mean of its divisors is an integer number (1401895485).

Almost surely, 2^21320301113 is an apocalyptic number.

It is an amenable number.

21320301113 is a deficient number, since it is larger than the sum of its proper divisors (1110026647).

21320301113 is a wasteful number, since it uses less digits than its factorization.

21320301113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7228.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21320301113 its reverse (31110302312), we get a palindrome (52430603425).

The spelling of 21320301113 in words is "twenty-one billion, three hundred twenty million, three hundred one thousand, one hundred thirteen".