21070500011 has 8 divisors (see below), whose sum is σ = 22987051248. Its totient is φ = 19154124000.

The previous prime is 21070500007. The next prime is 21070500067. The reversal of 21070500011 is 11000507012.

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

It is not a de Polignac number, because 21070500011 - 2² = 21070500007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21070500071) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 439901 + ... + 485441.

It is an arithmetic number, because the mean of its divisors is an integer number (2873381406).

Almost surely, 2^21070500011 is an apocalyptic number.

21070500011 is a deficient number, since it is larger than the sum of its proper divisors (1916551237).

21070500011 is a wasteful number, since it uses less digits than its factorization.

21070500011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87613.

The product of its (nonzero) digits is 70, while the sum is 17.

The spelling of 21070500011 in words is "twenty-one billion, seventy million, five hundred thousand, eleven".