20041221219 has 4 divisors (see below), whose sum is σ = 26721628296. Its totient is φ = 13360814144.

The previous prime is 20041221209. The next prime is 20041221227. The reversal of 20041221219 is 91212214002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20041221219 - 2⁹ = 20041220707 is a prime.

It is a super-2 number, since 2×20041221219² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20041221209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3340203534 + ... + 3340203539.

It is an arithmetic number, because the mean of its divisors is an integer number (6680407074).

Almost surely, 2^20041221219 is an apocalyptic number.

20041221219 is a deficient number, since it is larger than the sum of its proper divisors (6680407077).

20041221219 is an equidigital number, since it uses as much as digits as its factorization.

20041221219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6680407076.

The product of its (nonzero) digits is 576, while the sum is 24.

The spelling of 20041221219 in words is "twenty billion, forty-one million, two hundred twenty-one thousand, two hundred nineteen".