21683019223 has 16 divisors (see below), whose sum is σ = 24250254336. Its totient is φ = 19289934720.

The previous prime is 21683019221. The next prime is 21683019229. The reversal of 21683019223 is 32291038612.

It is a cyclic number.

It is not a de Polignac number, because 21683019223 - 2¹ = 21683019221 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 (21683019221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 455761 + ... + 501082.

It is an arithmetic number, because the mean of its divisors is an integer number (1515640896).

Almost surely, 2^21683019223 is an apocalyptic number.

21683019223 is a deficient number, since it is larger than the sum of its proper divisors (2567235113).

21683019223 is a wasteful number, since it uses less digits than its factorization.

21683019223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956934.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 21683019223 in words is "twenty-one billion, six hundred eighty-three million, nineteen thousand, two hundred twenty-three".