20011223319 has 4 divisors (see below), whose sum is σ = 26681631096. Its totient is φ = 13340815544.

The previous prime is 20011223269. The next prime is 20011223321. The reversal of 20011223319 is 91332211002.

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 20011223319 - 2²¹ = 20009126167 is a prime.

It is a super-2 number, since 2×20011223319² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011223359) 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, 3335203884 + ... + 3335203889.

It is an arithmetic number, because the mean of its divisors is an integer number (6670407774).

Almost surely, 2^20011223319 is an apocalyptic number.

20011223319 is a deficient number, since it is larger than the sum of its proper divisors (6670407777).

20011223319 is an equidigital number, since it uses as much as digits as its factorization.

20011223319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6670407776.

The product of its (nonzero) digits is 648, while the sum is 24.

The spelling of 20011223319 in words is "twenty billion, eleven million, two hundred twenty-three thousand, three hundred nineteen".