211442229 has 6 divisors (see below), whose sum is σ = 305416566. Its totient is φ = 140961480.

The previous prime is 211442221. The next prime is 211442239. The reversal of 211442229 is 922244112.

211442229 is a `hidden beast` number, since 211 + 4 + 422 + 29 = 666.

211442229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 210308004 + 1134225 = 14502^2 + 1065^2 .

It is not a de Polignac number, because 211442229 - 2³ = 211442221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211442221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11746782 + ... + 11746799.

It is an arithmetic number, because the mean of its divisors is an integer number (50902761).

Almost surely, 2^211442229 is an apocalyptic number.

It is an amenable number.

211442229 is a deficient number, since it is larger than the sum of its proper divisors (93974337).

211442229 is a wasteful number, since it uses less digits than its factorization.

211442229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23493587 (or 23493584 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 211442229 is about 14541.0532287039. The cubic root of 211442229 is about 595.7498058383.

The spelling of 211442229 in words is "two hundred eleven million, four hundred forty-two thousand, two hundred twenty-nine".