23223311220 has 96 divisors (see below), whose sum is σ = 67877905536. Its totient is φ = 5926694400.

The previous prime is 23223311197. The next prime is 23223311231. The reversal of 23223311220 is 2211332232.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49675 + ... + 221165.

It is an arithmetic number, because the mean of its divisors is an integer number (707061516).

Almost surely, 2^23223311220 is an apocalyptic number.

23223311220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23223311220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33938952768).

23223311220 is an abundant number, since it is smaller than the sum of its proper divisors (44654594316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23223311220 is a wasteful number, since it uses less digits than its factorization.

23223311220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171601 (or 171599 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 23223311220 its reverse (2211332232), we get a palindrome (25434643452).

The spelling of 23223311220 in words is "twenty-three billion, two hundred twenty-three million, three hundred eleven thousand, two hundred twenty".