23001331121220 has 96 divisors (see below), whose sum is σ = 65207936787840. Its totient is φ = 6057160990720.

The previous prime is 23001331121117. The next prime is 23001331121231. The reversal of 23001331121220 is 2212113310032.

It is a super-2 number, since 2×23001331121220² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10498660 + ... + 12498980.

It is an arithmetic number, because the mean of its divisors is an integer number (679249341540).

Almost surely, 2^{23001331121220} is an apocalyptic number.

23001331121220 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 23001331121220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32603968393920).

23001331121220 is an abundant number, since it is smaller than the sum of its proper divisors (42206605666620).

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

23001331121220 is a wasteful number, since it uses less digits than its factorization.

23001331121220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2002725 (or 2002723 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 23001331121220 its reverse (2212113310032), we get a palindrome (25213444431252).

The spelling of 23001331121220 in words is "twenty-three trillion, one billion, three hundred thirty-one million, one hundred twenty-one thousand, two hundred twenty".