118224661 has 2 divisors, whose sum is σ = 118224662. Its totient is φ = 118224660.

The previous prime is 118224637. The next prime is 118224671. The reversal of 118224661 is 166422811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111302500 + 6922161 = 10550^2 + 2631^2 .

It is an emirp because it is prime and its reverse (166422811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118224661 - 2⁵ = 118224629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118224671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59112330 + 59112331.

It is an arithmetic number, because the mean of its divisors is an integer number (59112331).

Almost surely, 2^118224661 is an apocalyptic number.

It is an amenable number.

118224661 is a deficient number, since it is larger than the sum of its proper divisors (1).

118224661 is an equidigital number, since it uses as much as digits as its factorization.

118224661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 31.

The square root of 118224661 is about 10873.1164345830. The cubic root of 118224661 is about 490.7978962011.

The spelling of 118224661 in words is "one hundred eighteen million, two hundred twenty-four thousand, six hundred sixty-one".