221762041 has 2 divisors, whose sum is σ = 221762042. Its totient is φ = 221762040.

The previous prime is 221762033. The next prime is 221762063. The reversal of 221762041 is 140267122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204919225 + 16842816 = 14315^2 + 4104^2 .

It is a cyclic number.

It is not a de Polignac number, because 221762041 - 2³ = 221762033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221761997 and 221762015.

It is not a weakly prime, because it can be changed into another prime (221762011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110881020 + 110881021.

It is an arithmetic number, because the mean of its divisors is an integer number (110881021).

Almost surely, 2^221762041 is an apocalyptic number.

It is an amenable number.

221762041 is a deficient number, since it is larger than the sum of its proper divisors (1).

221762041 is an equidigital number, since it uses as much as digits as its factorization.

221762041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 221762041 is about 14891.6769035592. The cubic root of 221762041 is about 605.2884729529.

The spelling of 221762041 in words is "two hundred twenty-one million, seven hundred sixty-two thousand, forty-one".