212243011 has 8 divisors (see below), whose sum is σ = 234499104. Its totient is φ = 191072640.

The previous prime is 212242999. The next prime is 212243021. The reversal of 212243011 is 110342212.

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

It is a cyclic number.

It is not a de Polignac number, because 212243011 - 2¹⁹ = 211718723 is a prime.

It is a super-2 number, since 2×212243011² = 90094191436692242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212243021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271020 + ... + 271801.

It is an arithmetic number, because the mean of its divisors is an integer number (29312388).

Almost surely, 2^212243011 is an apocalyptic number.

212243011 is a deficient number, since it is larger than the sum of its proper divisors (22256093).

212243011 is a wasteful number, since it uses less digits than its factorization.

212243011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542861.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 212243011 is about 14568.5624204998. The cubic root of 212243011 is about 596.5009404524.

Adding to 212243011 its reverse (110342212), we get a palindrome (322585223).

The spelling of 212243011 in words is "two hundred twelve million, two hundred forty-three thousand, eleven".