221442131401189 has 2 divisors, whose sum is σ = 221442131401190. Its totient is φ = 221442131401188.

The previous prime is 221442131401157. The next prime is 221442131401217. The reversal of 221442131401189 is 981104131244122.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219533354288964 + 1908777112225 = 14816658^2 + 1381585^2 .

It is a cyclic number.

It is not a de Polignac number, because 221442131401189 - 2⁵ = 221442131401157 is a prime.

It is a super-2 number, since 2×221442131401189² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221442131401129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110721065700594 + 110721065700595.

It is an arithmetic number, because the mean of its divisors is an integer number (110721065700595).

Almost surely, 2^{221442131401189} is an apocalyptic number.

It is an amenable number.

221442131401189 is a deficient number, since it is larger than the sum of its proper divisors (1).

221442131401189 is an equidigital number, since it uses as much as digits as its factorization.

221442131401189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110592, while the sum is 43.

The spelling of 221442131401189 in words is "two hundred twenty-one trillion, four hundred forty-two billion, one hundred thirty-one million, four hundred one thousand, one hundred eighty-nine".