218101149 has 12 divisors (see below), whose sum is σ = 360040096. Its totient is φ = 124629192.

The previous prime is 218101087. The next prime is 218101153. The reversal of 218101149 is 941101812.

It is not a de Polignac number, because 218101149 - 2⁹ = 218100637 is a prime.

It is a super-2 number, since 2×218101149² = 95136222390240402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218101189) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1730899 + ... + 1731024.

Almost surely, 2^218101149 is an apocalyptic number.

It is an amenable number.

218101149 is a deficient number, since it is larger than the sum of its proper divisors (141938947).

218101149 is a wasteful number, since it uses less digits than its factorization.

218101149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3461936 (or 3461933 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The square root of 218101149 is about 14768.2480003554. The cubic root of 218101149 is about 601.9392338675.

The spelling of 218101149 in words is "two hundred eighteen million, one hundred one thousand, one hundred forty-nine".