21232223319 has 4 divisors (see below), whose sum is σ = 28309631096. Its totient is φ = 14154815544.

The previous prime is 21232223317. The next prime is 21232223377. The reversal of 21232223319 is 91332223212.

It is a happy number.

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

It is not a de Polignac number, because 21232223319 - 2¹ = 21232223317 is a prime.

It is a super-2 number, since 2×21232223319² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232223317) 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, 3538703884 + ... + 3538703889.

It is an arithmetic number, because the mean of its divisors is an integer number (7077407774).

Almost surely, 2^21232223319 is an apocalyptic number.

21232223319 is a deficient number, since it is larger than the sum of its proper divisors (7077407777).

21232223319 is an equidigital number, since it uses as much as digits as its factorization.

21232223319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7077407776.

The product of its digits is 7776, while the sum is 30.

It can be divided in two parts, 212322 and 23319, that added together give a triangular number (235641 = T₆₈₆).

The spelling of 21232223319 in words is "twenty-one billion, two hundred thirty-two million, two hundred twenty-three thousand, three hundred nineteen".