21200022019 has 8 divisors (see below), whose sum is σ = 23224066560. Its totient is φ = 19192105800.

The previous prime is 21200022017. The next prime is 21200022031. The reversal of 21200022019 is 91022000212.

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

It is a cyclic number.

It is not a de Polignac number, because 21200022019 - 2¹ = 21200022017 is a prime.

It is a super-2 number, since 2×21200022019² (a number of 21 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 = 21200021987 and 21200022005.

It is not an unprimeable number, because it can be changed into a prime (21200022017) 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, 4029327 + ... + 4034584.

It is an arithmetic number, because the mean of its divisors is an integer number (2903008320).

Almost surely, 2^21200022019 is an apocalyptic number.

21200022019 is a deficient number, since it is larger than the sum of its proper divisors (2024044541).

21200022019 is a wasteful number, since it uses less digits than its factorization.

21200022019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8064161.

The product of its (nonzero) digits is 144, while the sum is 19.

The spelling of 21200022019 in words is "twenty-one billion, two hundred million, twenty-two thousand, nineteen".