21100150005 has 128 divisors (see below), whose sum is σ = 38516083200. Its totient is φ = 9856563200.

The previous prime is 21100150003. The next prime is 21100150073. The reversal of 21100150005 is 50005100112.

It is not a de Polignac number, because 21100150005 - 2¹ = 21100150003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21100150003) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 121966099 + ... + 121966271.

It is an arithmetic number, because the mean of its divisors is an integer number (300906900).

Almost surely, 2^21100150005 is an apocalyptic number.

It is an amenable number.

21100150005 is a deficient number, since it is larger than the sum of its proper divisors (17415933195).

21100150005 is a wasteful number, since it uses less digits than its factorization.

21100150005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 15.

Adding to 21100150005 its reverse (50005100112), we get a palindrome (71105250117).

The spelling of 21100150005 in words is "twenty-one billion, one hundred million, one hundred fifty thousand, five".