21300120011 has 8 divisors (see below), whose sum is σ = 21327570000. Its totient is φ = 21272689152.

The previous prime is 21300119987. The next prime is 21300120053. The reversal of 21300120011 is 11002100312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21300120011 is a prime.

It is a super-2 number, since 2×21300120011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21300119974 and 21300120001.

It is not an unprimeable number, because it can be changed into a prime (21300120211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4585256 + ... + 4589898.

It is an arithmetic number, because the mean of its divisors is an integer number (2665946250).

Almost surely, 2^21300120011 is an apocalyptic number.

21300120011 is a deficient number, since it is larger than the sum of its proper divisors (27449989).

21300120011 is a wasteful number, since it uses less digits than its factorization.

21300120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9565.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 21300120011 its reverse (11002100312), we get a palindrome (32302220323).

The spelling of 21300120011 in words is "twenty-one billion, three hundred million, one hundred twenty thousand, eleven".