221311192940041 has 2 divisors, whose sum is σ = 221311192940042. Its totient is φ = 221311192940040.

The previous prime is 221311192939943. The next prime is 221311192940081. The reversal of 221311192940041 is 140049291113122.

It is an a-pointer prime, because the next prime (221311192940081) can be obtained adding 221311192940041 to its sum of digits (40).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 185162287279225 + 36148905660816 = 13607435^2 + 6012396^2 .

It is a cyclic number.

It is not a de Polignac number, because 221311192940041 - 2¹³ = 221311192931849 is a prime.

It is a super-2 number, since 2×221311192940041² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221311192939976 and 221311192940003.

It is not a weakly prime, because it can be changed into another prime (221311192940081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110655596470020 + 110655596470021.

It is an arithmetic number, because the mean of its divisors is an integer number (110655596470021).

Almost surely, 2^{221311192940041} is an apocalyptic number.

It is an amenable number.

221311192940041 is a deficient number, since it is larger than the sum of its proper divisors (1).

221311192940041 is an equidigital number, since it uses as much as digits as its factorization.

221311192940041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 40.

The spelling of 221311192940041 in words is "two hundred twenty-one trillion, three hundred eleven billion, one hundred ninety-two million, nine hundred forty thousand, forty-one".