23211312120 has 96 divisors (see below), whose sum is σ = 77475640320. Its totient is φ = 6022391040.

The previous prime is 23211312101. The next prime is 23211312143. The reversal of 23211312120 is 2121311232.

23211312120 is a `hidden beast` number, since 2 + 321 + 131 + 212 + 0 = 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 = 23211312093 and 23211312102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 857976 + ... + 884615.

It is an arithmetic number, because the mean of its divisors is an integer number (807037920).

Almost surely, 2^23211312120 is an apocalyptic number.

23211312120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23211312120 is an abundant number, since it is smaller than the sum of its proper divisors (54264328200).

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

23211312120 is a wasteful number, since it uses less digits than its factorization.

23211312120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1742645 (or 1742638 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 23211312120 its reverse (2121311232), we get a palindrome (25332623352).

The spelling of 23211312120 in words is "twenty-three billion, two hundred eleven million, three hundred twelve thousand, one hundred twenty".