21321003203093 has 4 divisors (see below), whose sum is σ = 23259276221568. Its totient is φ = 19382730184620.

The previous prime is 21321003203083. The next prime is 21321003203107. The reversal of 21321003203093 is 39030230012312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 21321003203093 - 2¹⁸ = 21321002940949 is a prime.

It is a super-3 number, since 3×21321003203093³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21321003203083) 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, 969136509221 + ... + 969136509242.

It is an arithmetic number, because the mean of its divisors is an integer number (5814819055392).

Almost surely, 2^{21321003203093} is an apocalyptic number.

It is an amenable number.

21321003203093 is a deficient number, since it is larger than the sum of its proper divisors (1938273018475).

21321003203093 is a wasteful number, since it uses less digits than its factorization.

21321003203093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1938273018474.

The product of its (nonzero) digits is 5832, while the sum is 29.

The spelling of 21321003203093 in words is "twenty-one trillion, three hundred twenty-one billion, three million, two hundred three thousand, ninety-three".