21150412005 has 32 divisors (see below), whose sum is σ = 35125429248. Its totient is φ = 10855987200.

The previous prime is 21150411991. The next prime is 21150412033. The reversal of 21150412005 is 50021405112.

It is not a de Polignac number, because 21150412005 - 2⁶ = 21150411941 is a prime.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 41484 + ... + 209813.

It is an arithmetic number, because the mean of its divisors is an integer number (1097669664).

Almost surely, 2^21150412005 is an apocalyptic number.

It is an amenable number.

21150412005 is a deficient number, since it is larger than the sum of its proper divisors (13975017243).

21150412005 is a wasteful number, since it uses less digits than its factorization.

21150412005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251517.

The product of its (nonzero) digits is 400, while the sum is 21.

Adding to 21150412005 its reverse (50021405112), we get a palindrome (71171817117).

The spelling of 21150412005 in words is "twenty-one billion, one hundred fifty million, four hundred twelve thousand, five".