6188241221 has 2 divisors, whose sum is σ = 6188241222. Its totient is φ = 6188241220.

The previous prime is 6188241211. The next prime is 6188241259. The reversal of 6188241221 is 1221428816.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5033193025 + 1155048196 = 70945^2 + 33986^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6188241221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6188241211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3094120610 + 3094120611.

It is an arithmetic number, because the mean of its divisors is an integer number (3094120611).

Almost surely, 2^6188241221 is an apocalyptic number.

It is an amenable number.

6188241221 is a deficient number, since it is larger than the sum of its proper divisors (1).

6188241221 is an equidigital number, since it uses as much as digits as its factorization.

6188241221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12288, while the sum is 35.

The square root of 6188241221 is about 78665.3749816271. The cubic root of 6188241221 is about 1835.9284202953.

The spelling of 6188241221 in words is "six billion, one hundred eighty-eight million, two hundred forty-one thousand, two hundred twenty-one".