21000150011 has 4 divisors (see below), whose sum is σ = 21003207912. Its totient is φ = 20997092112.

The previous prime is 21000149999. The next prime is 21000150029. The reversal of 21000150011 is 11005100012.

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

It is a cyclic number.

It is not a de Polignac number, because 21000150011 - 2¹⁰ = 21000148987 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21000149974 and 21000150001.

It is not an unprimeable number, because it can be changed into a prime (21000150211) 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, 1518626 + ... + 1532391.

It is an arithmetic number, because the mean of its divisors is an integer number (5250801978).

Almost surely, 2^21000150011 is an apocalyptic number.

21000150011 is a deficient number, since it is larger than the sum of its proper divisors (3057901).

21000150011 is an equidigital number, since it uses as much as digits as its factorization.

21000150011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3057900.

The product of its (nonzero) digits is 10, while the sum is 11.

Adding to 21000150011 its reverse (11005100012), we get a palindrome (32005250023).

The spelling of 21000150011 in words is "twenty-one billion, one hundred fifty thousand, eleven".