21300131101 has 4 divisors (see below), whose sum is σ = 21411650304. Its totient is φ = 21188611900.

The previous prime is 21300131077. The next prime is 21300131107. The reversal of 21300131101 is 10113100312.

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 a de Polignac number, because none of the positive numbers 2^k-21300131101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21300131107) 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, 55759315 + ... + 55759696.

It is an arithmetic number, because the mean of its divisors is an integer number (5352912576).

Almost surely, 2^21300131101 is an apocalyptic number.

It is an amenable number.

21300131101 is a deficient number, since it is larger than the sum of its proper divisors (111519203).

21300131101 is a wasteful number, since it uses less digits than its factorization.

21300131101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111519202.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 21300131101 its reverse (10113100312), we get a palindrome (31413231413).

The spelling of 21300131101 in words is "twenty-one billion, three hundred million, one hundred thirty-one thousand, one hundred one".