21232223032120 has 32 divisors (see below), whose sum is σ = 47775877099200. Its totient is φ = 8492289163648.

The previous prime is 21232223032073. The next prime is 21232223032123. The reversal of 21232223032120 is 2123032223212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232223032123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18178099 + ... + 19310818.

It is an arithmetic number, because the mean of its divisors is an integer number (1492996159350).

Almost surely, 2^{21232223032120} is an apocalyptic number.

21232223032120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21232223032120 is an abundant number, since it is smaller than the sum of its proper divisors (26543654067080).

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

21232223032120 is a wasteful number, since it uses less digits than its factorization.

21232223032120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37503087 (or 37503083 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21232223032120 its reverse (2123032223212), we get a palindrome (23355255255332).

The spelling of 21232223032120 in words is "twenty-one trillion, two hundred thirty-two billion, two hundred twenty-three million, thirty-two thousand, one hundred twenty".