118200221 has 2 divisors, whose sum is σ = 118200222. Its totient is φ = 118200220.

The previous prime is 118200209. The next prime is 118200227. The reversal of 118200221 is 122002811.

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., 116877721 + 1322500 = 10811^2 + 1150^2 .

It is a cyclic number.

It is not a de Polignac number, because 118200221 - 2⁶ = 118200157 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 118200221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118200227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59100110 + 59100111.

It is an arithmetic number, because the mean of its divisors is an integer number (59100111).

Almost surely, 2^118200221 is an apocalyptic number.

It is an amenable number.

118200221 is a deficient number, since it is larger than the sum of its proper divisors (1).

118200221 is an equidigital number, since it uses as much as digits as its factorization.

118200221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 118200221 is about 10871.9925036766. The cubic root of 118200221 is about 490.7640737957.

The spelling of 118200221 in words is "one hundred eighteen million, two hundred thousand, two hundred twenty-one".