221443046051 has 2 divisors, whose sum is σ = 221443046052. Its totient is φ = 221443046050.

The previous prime is 221443046017. The next prime is 221443046087. The reversal of 221443046051 is 150640344122.

221443046051 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 221443046051 - 2¹⁸ = 221442783907 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221443045999 and 221443046017.

It is not a weakly prime, because it can be changed into another prime (221443046551) 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, 110721523025 + 110721523026.

It is an arithmetic number, because the mean of its divisors is an integer number (110721523026).

Almost surely, 2^221443046051 is an apocalyptic number.

221443046051 is a deficient number, since it is larger than the sum of its proper divisors (1).

221443046051 is an equidigital number, since it uses as much as digits as its factorization.

221443046051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 32.

The spelling of 221443046051 in words is "two hundred twenty-one billion, four hundred forty-three million, forty-six thousand, fifty-one".