118862021 has 2 divisors, whose sum is σ = 118862022. Its totient is φ = 118862020.

The previous prime is 118861991. The next prime is 118862047. The reversal of 118862021 is 120268811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113848900 + 5013121 = 10670^2 + 2239^2 .

It is a cyclic number.

It is not a de Polignac number, because 118862021 - 2¹⁰ = 118860997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118861021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59431010 + 59431011.

It is an arithmetic number, because the mean of its divisors is an integer number (59431011).

Almost surely, 2^118862021 is an apocalyptic number.

It is an amenable number.

118862021 is a deficient number, since it is larger than the sum of its proper divisors (1).

118862021 is an equidigital number, since it uses as much as digits as its factorization.

118862021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 29.

The square root of 118862021 is about 10902.3860232520. The cubic root of 118862021 is about 491.6782948254.

The spelling of 118862021 in words is "one hundred eighteen million, eight hundred sixty-two thousand, twenty-one".