212223011 has 32 divisors (see below), whose sum is σ = 291949056. Its totient is φ = 148896000.

The previous prime is 212223007. The next prime is 212223049. The reversal of 212223011 is 110322212.

It is a happy number.

It is not a de Polignac number, because 212223011 - 2² = 212223007 is a prime.

It is a super-2 number, since 2×212223011² = 90077212795812242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212223071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38456 + ... + 43626.

It is an arithmetic number, because the mean of its divisors is an integer number (9123408).

Almost surely, 2^212223011 is an apocalyptic number.

212223011 is a deficient number, since it is larger than the sum of its proper divisors (79726045).

212223011 is a wasteful number, since it uses less digits than its factorization.

212223011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5243.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 212223011 is about 14567.8759948045. The cubic root of 212223011 is about 596.4822034498.

Adding to 212223011 its reverse (110322212), we get a palindrome (322545223).

The spelling of 212223011 in words is "two hundred twelve million, two hundred twenty-three thousand, eleven".