23323001201220 has 384 divisors, whose sum is σ = 76193543946240. Its totient is φ = 5220649635840.

The previous prime is 23323001201191. The next prime is 23323001201231. The reversal of 23323001201220 is 2210210032332.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 8101075741 + ... + 8101078619.

It is an arithmetic number, because the mean of its divisors is an integer number (198420687360).

Almost surely, 2^{23323001201220} is an apocalyptic number.

23323001201220 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 23323001201220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38096771973120).

23323001201220 is an abundant number, since it is smaller than the sum of its proper divisors (52870542745020).

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

23323001201220 is a wasteful number, since it uses less digits than its factorization.

23323001201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4755 (or 4753 counting only the distinct ones).

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

Adding to 23323001201220 its reverse (2210210032332), we get a palindrome (25533211233552).

The spelling of 23323001201220 in words is "twenty-three trillion, three hundred twenty-three billion, one million, two hundred one thousand, two hundred twenty".