23331000011220 has 288 divisors, whose sum is σ = 78481365371136. Its totient is φ = 5562476236800.

The previous prime is 23331000011177. The next prime is 23331000011269. The reversal of 23331000011220 is 2211000013332.

23331000011220 is a `hidden beast` number, since 2 + 333 + 100 + 0 + 0 + 11 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 23331000011193 and 23331000011202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1566146812 + ... + 1566161708.

It is an arithmetic number, because the mean of its divisors is an integer number (272504740872).

Almost surely, 2^{23331000011220} is an apocalyptic number.

23331000011220 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 23331000011220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39240682685568).

23331000011220 is an abundant number, since it is smaller than the sum of its proper divisors (55150365359916).

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

23331000011220 is a wasteful number, since it uses less digits than its factorization.

23331000011220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27951 (or 27946 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 23331000011220 its reverse (2211000013332), we get a palindrome (25542000024552).

The spelling of 23331000011220 in words is "twenty-three trillion, three hundred thirty-one billion, eleven thousand, two hundred twenty".