23300212001821 has 2 divisors, whose sum is σ = 23300212001822. Its totient is φ = 23300212001820.

The previous prime is 23300212001753. The next prime is 23300212001831. The reversal of 23300212001821 is 12810021200332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23184706502500 + 115505499321 = 4815050^2 + 339861^2 .

It is a cyclic number.

It is not a de Polignac number, because 23300212001821 - 2²¹ = 23300209904669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23300212001831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11650106000910 + 11650106000911.

It is an arithmetic number, because the mean of its divisors is an integer number (11650106000911).

Almost surely, 2^{23300212001821} is an apocalyptic number.

It is an amenable number.

23300212001821 is a deficient number, since it is larger than the sum of its proper divisors (1).

23300212001821 is an equidigital number, since it uses as much as digits as its factorization.

23300212001821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

The spelling of 23300212001821 in words is "twenty-three trillion, three hundred billion, two hundred twelve million, one thousand, eight hundred twenty-one".