21032120323203 has 16 divisors (see below), whose sum is σ = 30592911503232. Its totient is φ = 12746432720000.

The previous prime is 21032120323121. The next prime is 21032120323217. The reversal of 21032120323203 is 30232302123012.

It is a cyclic number.

It is not a de Polignac number, because 21032120323203 - 2⁸ = 21032120322947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21032120321203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6276438 + ... + 9025403.

It is an arithmetic number, because the mean of its divisors is an integer number (1912056968952).

Almost surely, 2^{21032120323203} is an apocalyptic number.

21032120323203 is a deficient number, since it is larger than the sum of its proper divisors (9560791180029).

21032120323203 is a wasteful number, since it uses less digits than its factorization.

21032120323203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15343506.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 21032120323203 its reverse (30232302123012), we get a palindrome (51264422446215).

The spelling of 21032120323203 in words is "twenty-one trillion, thirty-two billion, one hundred twenty million, three hundred twenty-three thousand, two hundred three".