21100223210323 has 2 divisors, whose sum is σ = 21100223210324. Its totient is φ = 21100223210322.

The previous prime is 21100223210267. The next prime is 21100223210383. The reversal of 21100223210323 is 32301232200112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21100223210323 - 2¹³ = 21100223202131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21100223210294 and 21100223210303.

It is not a weakly prime, because it can be changed into another prime (21100223210383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10550111605161 + 10550111605162.

It is an arithmetic number, because the mean of its divisors is an integer number (10550111605162).

Almost surely, 2^{21100223210323} is an apocalyptic number.

21100223210323 is a deficient number, since it is larger than the sum of its proper divisors (1).

21100223210323 is an equidigital number, since it uses as much as digits as its factorization.

21100223210323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21100223210323 its reverse (32301232200112), we get a palindrome (53401455410435).

The spelling of 21100223210323 in words is "twenty-one trillion, one hundred billion, two hundred twenty-three million, two hundred ten thousand, three hundred twenty-three".