23221111213 has 4 divisors (see below), whose sum is σ = 24230724768. Its totient is φ = 22211497660.

The previous prime is 23221111211. The next prime is 23221111261. The reversal of 23221111213 is 31211112232.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23221111213 - 2¹ = 23221111211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23221111211) 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, 504806743 + ... + 504806788.

It is an arithmetic number, because the mean of its divisors is an integer number (6057681192).

Almost surely, 2^23221111213 is an apocalyptic number.

23221111213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

23221111213 is a deficient number, since it is larger than the sum of its proper divisors (1009613555).

23221111213 is a wasteful number, since it uses less digits than its factorization.

23221111213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009613554.

The product of its digits is 144, while the sum is 19.

Adding to 23221111213 its reverse (31211112232), we get a palindrome (54432223445).

The spelling of 23221111213 in words is "twenty-three billion, two hundred twenty-one million, one hundred eleven thousand, two hundred thirteen".