23331211312220 has 24 divisors (see below), whose sum is σ = 55994907149664. Its totient is φ = 7999272449856.

The previous prime is 23331211312177. The next prime is 23331211312333. The reversal of 23331211312220 is 2221311213332.

It is a self number, because there is not a number n which added to its sum of digits gives 23331211312220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83325754547 + ... + 83325754826.

It is an arithmetic number, because the mean of its divisors is an integer number (2333121131236).

Almost surely, 2^{23331211312220} is an apocalyptic number.

23331211312220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23331211312220 is an abundant number, since it is smaller than the sum of its proper divisors (32663695837444).

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

23331211312220 is a wasteful number, since it uses less digits than its factorization.

23331211312220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166651509389 (or 166651509387 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 23331211312220 its reverse (2221311213332), we get a palindrome (25552522525552).

The spelling of 23331211312220 in words is "twenty-three trillion, three hundred thirty-one billion, two hundred eleven million, three hundred twelve thousand, two hundred twenty".