221310218036051 has 2 divisors, whose sum is σ = 221310218036052. Its totient is φ = 221310218036050.

The previous prime is 221310218035969. The next prime is 221310218036053. The reversal of 221310218036051 is 150630812013122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221310218036051 - 2⁴⁶ = 150941473858387 is a prime.

It is a super-3 number, since 3×221310218036051³ (a number of 44 digits) contains 333 as substring.

It is a Sophie Germain prime.

Together with 221310218036053, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (221310218036053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110655109018025 + 110655109018026.

It is an arithmetic number, because the mean of its divisors is an integer number (110655109018026).

Almost surely, 2^{221310218036051} is an apocalyptic number.

221310218036051 is a deficient number, since it is larger than the sum of its proper divisors (1).

221310218036051 is an equidigital number, since it uses as much as digits as its factorization.

221310218036051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 35.

The spelling of 221310218036051 in words is "two hundred twenty-one trillion, three hundred ten billion, two hundred eighteen million, thirty-six thousand, fifty-one".