211140222 has 8 divisors (see below), whose sum is σ = 422280456. Its totient is φ = 70380072.

The previous prime is 211140199. The next prime is 211140227. The reversal of 211140222 is 222041112.

It is a sphenic number, since it is the product of 3 distinct primes.

211140222 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211140227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17595013 + ... + 17595024.

It is an arithmetic number, because the mean of its divisors is an integer number (52785057).

Almost surely, 2^211140222 is an apocalyptic number.

211140222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211140222 is a wasteful number, since it uses less digits than its factorization.

211140222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35190042.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 211140222 is about 14530.6648849941. The cubic root of 211140222 is about 595.4660303884.

Adding to 211140222 its reverse (222041112), we get a palindrome (433181334).

The spelling of 211140222 in words is "two hundred eleven million, one hundred forty thousand, two hundred twenty-two".