21232123219 has 8 divisors (see below), whose sum is σ = 21826120032. Its totient is φ = 20646319680.

The previous prime is 21232123217. The next prime is 21232123223. The reversal of 21232123219 is 91232123212.

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 21232123219 - 2¹ = 21232123217 is a prime.

It is a super-2 number, since 2×21232123219² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21232123217) 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, 2043064 + ... + 2053429.

It is an arithmetic number, because the mean of its divisors is an integer number (2728265004).

Almost surely, 2^21232123219 is an apocalyptic number.

21232123219 is a deficient number, since it is larger than the sum of its proper divisors (593996813).

21232123219 is an equidigital number, since it uses as much as digits as its factorization.

21232123219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4096637.

The product of its digits is 2592, while the sum is 28.

The spelling of 21232123219 in words is "twenty-one billion, two hundred thirty-two million, one hundred twenty-three thousand, two hundred nineteen".