21000000212019 has 12 divisors (see below), whose sum is σ = 30333389302216. Its totient is φ = 13999974450912.

The previous prime is 21000000212011. The next prime is 21000000212047. The reversal of 21000000212019 is 91021200000012.

It is not a de Polignac number, because 21000000212019 - 2³ = 21000000212011 is a prime.

It is a super-2 number, since 2×21000000212019² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21000000211992 and 21000000212010.

It is not an unprimeable number, because it can be changed into a prime (21000000212011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3947424 + ... + 7588290.

Almost surely, 2^{21000000212019} is an apocalyptic number.

21000000212019 is a deficient number, since it is larger than the sum of its proper divisors (9333389090197).

21000000212019 is a wasteful number, since it uses less digits than its factorization.

21000000212019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4281746 (or 4281743 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The spelling of 21000000212019 in words is "twenty-one trillion, two hundred twelve thousand, nineteen".