21202323093 has 24 divisors (see below), whose sum is σ = 35007530688. Its totient is φ = 12113235072.

The previous prime is 21202323089. The next prime is 21202323097. The reversal of 21202323093 is 39032320212.

21202323093 is a `hidden beast` number, since 2 + 120 + 232 + 309 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (21202323089) and next prime (21202323097).

It is not a de Polignac number, because 21202323093 - 2² = 21202323089 is a prime.

It is a super-2 number, since 2×21202323093² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202323097) 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 23 ways as a sum of consecutive naturals, for example, 320221 + ... + 380717.

It is an arithmetic number, because the mean of its divisors is an integer number (1458647112).

Almost surely, 2^21202323093 is an apocalyptic number.

It is an amenable number.

21202323093 is a deficient number, since it is larger than the sum of its proper divisors (13805207595).

21202323093 is a wasteful number, since it uses less digits than its factorization.

21202323093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66073 (or 66070 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The spelling of 21202323093 in words is "twenty-one billion, two hundred two million, three hundred twenty-three thousand, ninety-three".