221330120387 has 2 divisors, whose sum is σ = 221330120388. Its totient is φ = 221330120386.

The previous prime is 221330120377. The next prime is 221330120413. The reversal of 221330120387 is 783021033122.

221330120387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221330120387 - 2⁸ = 221330120131 is a prime.

It is not a weakly prime, because it can be changed into another prime (221330120317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110665060193 + 110665060194.

It is an arithmetic number, because the mean of its divisors is an integer number (110665060194).

Almost surely, 2^221330120387 is an apocalyptic number.

221330120387 is a deficient number, since it is larger than the sum of its proper divisors (1).

221330120387 is an equidigital number, since it uses as much as digits as its factorization.

221330120387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 32.

The spelling of 221330120387 in words is "two hundred twenty-one billion, three hundred thirty million, one hundred twenty thousand, three hundred eighty-seven".