21333200101723 has 2 divisors, whose sum is σ = 21333200101724. Its totient is φ = 21333200101722.

The previous prime is 21333200101721. The next prime is 21333200101819. The reversal of 21333200101723 is 32710100233312.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21333200101723 - 2¹ = 21333200101721 is a prime.

Together with 21333200101721, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 21333200101691 and 21333200101700.

It is not a weakly prime, because it can be changed into another prime (21333200101721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10666600050861 + 10666600050862.

It is an arithmetic number, because the mean of its divisors is an integer number (10666600050862).

Almost surely, 2^{21333200101723} is an apocalyptic number.

21333200101723 is a deficient number, since it is larger than the sum of its proper divisors (1).

21333200101723 is an equidigital number, since it uses as much as digits as its factorization.

21333200101723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 28.

The spelling of 21333200101723 in words is "twenty-one trillion, three hundred thirty-three billion, two hundred million, one hundred one thousand, seven hundred twenty-three".