221060371393 has 2 divisors, whose sum is σ = 221060371394. Its totient is φ = 221060371392.

The previous prime is 221060371307. The next prime is 221060371423. The reversal of 221060371393 is 393173060122.

It is a happy number.

221060371393 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 can be written as a sum of positive squares in only one way, i.e., 190264333249 + 30796038144 = 436193^2 + 175488^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221060371393 is a prime.

It is a super-2 number, since 2×221060371393² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (221060371193) 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, 110530185696 + 110530185697.

It is an arithmetic number, because the mean of its divisors is an integer number (110530185697).

Almost surely, 2^221060371393 is an apocalyptic number.

It is an amenable number.

221060371393 is a deficient number, since it is larger than the sum of its proper divisors (1).

221060371393 is an equidigital number, since it uses as much as digits as its factorization.

221060371393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 37.

The spelling of 221060371393 in words is "two hundred twenty-one billion, sixty million, three hundred seventy-one thousand, three hundred ninety-three".