221332310149 has 2 divisors, whose sum is σ = 221332310150. Its totient is φ = 221332310148.

The previous prime is 221332310083. The next prime is 221332310153. The reversal of 221332310149 is 941013233122.

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., 128805621025 + 92526689124 = 358895^2 + 304182^2 .

It is a cyclic number.

It is not a de Polignac number, because 221332310149 - 2¹⁹ = 221331785861 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221332310149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221332310159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110666155074 + 110666155075.

It is an arithmetic number, because the mean of its divisors is an integer number (110666155075).

Almost surely, 2^221332310149 is an apocalyptic number.

It is an amenable number.

221332310149 is a deficient number, since it is larger than the sum of its proper divisors (1).

221332310149 is an equidigital number, since it uses as much as digits as its factorization.

221332310149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The spelling of 221332310149 in words is "two hundred twenty-one billion, three hundred thirty-two million, three hundred ten thousand, one hundred forty-nine".