21072210219 has 12 divisors (see below), whose sum is σ = 31761012816. Its totient is φ = 13437351312.

The previous prime is 21072210217. The next prime is 21072210287. The reversal of 21072210219 is 91201227012.

It is not a de Polignac number, because 21072210219 - 2¹ = 21072210217 is a prime.

It is a super-2 number, since 2×21072210219² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21072210192 and 21072210201.

It is not an unprimeable number, because it can be changed into a prime (21072210217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50898852 + ... + 50899265.

It is an arithmetic number, because the mean of its divisors is an integer number (2646751068).

Almost surely, 2^21072210219 is an apocalyptic number.

21072210219 is a deficient number, since it is larger than the sum of its proper divisors (10688802597).

21072210219 is a wasteful number, since it uses less digits than its factorization.

21072210219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101798146 (or 101798143 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The spelling of 21072210219 in words is "twenty-one billion, seventy-two million, two hundred ten thousand, two hundred nineteen".