21032101005 has 16 divisors (see below), whose sum is σ = 33654424320. Its totient is φ = 11216099648.

The previous prime is 21032100989. The next prime is 21032101007. The reversal of 21032101005 is 50010123012.

It is a cyclic number.

It is not a de Polignac number, because 21032101005 - 2⁴ = 21032100989 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 (21032101007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124411 + ... + 239879.

It is an arithmetic number, because the mean of its divisors is an integer number (2103401520).

Almost surely, 2^21032101005 is an apocalyptic number.

It is an amenable number.

21032101005 is a deficient number, since it is larger than the sum of its proper divisors (12622323315).

21032101005 is a wasteful number, since it uses less digits than its factorization.

21032101005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127620.

The product of its (nonzero) digits is 60, while the sum is 15.

Adding to 21032101005 its reverse (50010123012), we get a palindrome (71042224017).

The spelling of 21032101005 in words is "twenty-one billion, thirty-two million, one hundred one thousand, five".