21703112293 has 4 divisors (see below), whose sum is σ = 21703765600. Its totient is φ = 21702458988.

The previous prime is 21703112279. The next prime is 21703112329. The reversal of 21703112293 is 39221130712.

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 a cyclic number.

It is not a de Polignac number, because 21703112293 - 2⁵ = 21703112261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21703112243) 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, 273993 + ... + 344206.

It is an arithmetic number, because the mean of its divisors is an integer number (5425941400).

Almost surely, 2^21703112293 is an apocalyptic number.

It is an amenable number.

21703112293 is a deficient number, since it is larger than the sum of its proper divisors (653307).

21703112293 is an equidigital number, since it uses as much as digits as its factorization.

21703112293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653306.

The product of its (nonzero) digits is 4536, while the sum is 31.

The spelling of 21703112293 in words is "twenty-one billion, seven hundred three million, one hundred twelve thousand, two hundred ninety-three".