222212013 has 4 divisors (see below), whose sum is σ = 296282688. Its totient is φ = 148141340.

The previous prime is 222212009. The next prime is 222212063. The reversal of 222212013 is 310212222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 222212013 - 2² = 222212009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222211983 and 222212001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222212063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37035333 + ... + 37035338.

It is an arithmetic number, because the mean of its divisors is an integer number (74070672).

Almost surely, 2^222212013 is an apocalyptic number.

It is an amenable number.

222212013 is a deficient number, since it is larger than the sum of its proper divisors (74070675).

222212013 is an equidigital number, since it uses as much as digits as its factorization.

222212013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74070674.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 222212013 is about 14906.7774183423. Note that the first 3 decimals coincide. The cubic root of 222212013 is about 605.6975884414.

Adding to 222212013 its reverse (310212222), we get a palindrome (532424235).

The spelling of 222212013 in words is "two hundred twenty-two million, two hundred twelve thousand, thirteen".