21032144231320 has 16 divisors (see below), whose sum is σ = 47322324520560. Its totient is φ = 8412857692512.

The previous prime is 21032144231309. The next prime is 21032144231323. The reversal of 21032144231320 is 2313244123012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21032144231323) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 262901802852 + ... + 262901802931.

It is an arithmetic number, because the mean of its divisors is an integer number (2957645282535).

Almost surely, 2^{21032144231320} is an apocalyptic number.

21032144231320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21032144231320 is an abundant number, since it is smaller than the sum of its proper divisors (26290180289240).

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

21032144231320 is a wasteful number, since it uses less digits than its factorization.

21032144231320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525803605794 (or 525803605790 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 21032144231320 its reverse (2313244123012), we get a palindrome (23345388354332).

The spelling of 21032144231320 in words is "twenty-one trillion, thirty-two billion, one hundred forty-four million, two hundred thirty-one thousand, three hundred twenty".