21323222010203 has 4 divisors (see below), whose sum is σ = 21398569084728. Its totient is φ = 21247874935680.

The previous prime is 21323222010163. The next prime is 21323222010227. The reversal of 21323222010203 is 30201022232312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21323222010203 - 2¹⁰ = 21323222009179 is a prime.

It is a super-2 number, since 2×21323222010203² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21323222010803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37673536838 + ... + 37673537403.

It is an arithmetic number, because the mean of its divisors is an integer number (5349642271182).

Almost surely, 2^{21323222010203} is an apocalyptic number.

21323222010203 is a deficient number, since it is larger than the sum of its proper divisors (75347074525).

21323222010203 is an equidigital number, since it uses as much as digits as its factorization.

21323222010203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75347074524.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21323222010203 its reverse (30201022232312), we get a palindrome (51524244242515).

The spelling of 21323222010203 in words is "twenty-one trillion, three hundred twenty-three billion, two hundred twenty-two million, ten thousand, two hundred three".