222512011 has 2 divisors, whose sum is σ = 222512012. Its totient is φ = 222512010.

The previous prime is 222511999. The next prime is 222512027. The reversal of 222512011 is 110215222.

It is a happy number.

It is an a-pointer prime, because the next prime (222512027) can be obtained adding 222512011 to its sum of digits (16).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222512011 is a prime.

It is not a weakly prime, because it can be changed into another prime (222512071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111256005 + 111256006.

It is an arithmetic number, because the mean of its divisors is an integer number (111256006).

Almost surely, 2^222512011 is an apocalyptic number.

222512011 is a deficient number, since it is larger than the sum of its proper divisors (1).

222512011 is an equidigital number, since it uses as much as digits as its factorization.

222512011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 222512011 is about 14916.8364943778. The cubic root of 222512011 is about 605.9700404901.

Adding to 222512011 its reverse (110215222), we get a palindrome (332727233).

The spelling of 222512011 in words is "two hundred twenty-two million, five hundred twelve thousand, eleven".