21100230323 has 8 divisors (see below), whose sum is σ = 22647468528. Its totient is φ = 19586997504.

The previous prime is 21100230313. The next prime is 21100230331. The reversal of 21100230323 is 32303200112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21100230323 - 2²² = 21096036019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21100230313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8500061 + ... + 8502542.

It is an arithmetic number, because the mean of its divisors is an integer number (2830933566).

Almost surely, 2^21100230323 is an apocalyptic number.

21100230323 is a deficient number, since it is larger than the sum of its proper divisors (1547238205).

21100230323 is a wasteful number, since it uses less digits than its factorization.

21100230323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17002693.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21100230323 its reverse (32303200112), we get a palindrome (53403430435).

The spelling of 21100230323 in words is "twenty-one billion, one hundred million, two hundred thirty thousand, three hundred twenty-three".