221410046242391 has 2 divisors, whose sum is σ = 221410046242392. Its totient is φ = 221410046242390.

The previous prime is 221410046242303. The next prime is 221410046242403. The reversal of 221410046242391 is 193242640014122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221410046242391 - 2¹⁴ = 221410046226007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221410046202391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110705023121195 + 110705023121196.

It is an arithmetic number, because the mean of its divisors is an integer number (110705023121196).

Almost surely, 2^{221410046242391} is an apocalyptic number.

221410046242391 is a deficient number, since it is larger than the sum of its proper divisors (1).

221410046242391 is an equidigital number, since it uses as much as digits as its factorization.

221410046242391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 41.

The spelling of 221410046242391 in words is "two hundred twenty-one trillion, four hundred ten billion, forty-six million, two hundred forty-two thousand, three hundred ninety-one".