221352536068051 has 2 divisors, whose sum is σ = 221352536068052. Its totient is φ = 221352536068050.

The previous prime is 221352536068003. The next prime is 221352536068063. The reversal of 221352536068051 is 150860635253122.

221352536068051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221352536068051 - 2¹¹ = 221352536066003 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221352536067986 and 221352536068004.

It is not a weakly prime, because it can be changed into another prime (221352536018051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110676268034025 + 110676268034026.

It is an arithmetic number, because the mean of its divisors is an integer number (110676268034026).

Almost surely, 2^{221352536068051} is an apocalyptic number.

221352536068051 is a deficient number, since it is larger than the sum of its proper divisors (1).

221352536068051 is an equidigital number, since it uses as much as digits as its factorization.

221352536068051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592000, while the sum is 49.

The spelling of 221352536068051 in words is "two hundred twenty-one trillion, three hundred fifty-two billion, five hundred thirty-six million, sixty-eight thousand, fifty-one".