21001112011019 has 8 divisors (see below), whose sum is σ = 24038714355168. Its totient is φ = 17972870538240.

The previous prime is 21001112011013. The next prime is 21001112011039. The reversal of 21001112011019 is 91011021110012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21001112011019 is a prime.

It is a super-2 number, since 2×21001112011019² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21001112011013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2340213032 + ... + 2340222005.

It is an arithmetic number, because the mean of its divisors is an integer number (3004839294396).

Almost surely, 2^{21001112011019} is an apocalyptic number.

21001112011019 is a deficient number, since it is larger than the sum of its proper divisors (3037602344149).

21001112011019 is an equidigital number, since it uses as much as digits as its factorization.

21001112011019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4680435685.

The product of its (nonzero) digits is 36, while the sum is 20.

The spelling of 21001112011019 in words is "twenty-one trillion, one billion, one hundred twelve million, eleven thousand, nineteen".