222012013 has 4 divisors (see below), whose sum is σ = 224506620. Its totient is φ = 219517408.

The previous prime is 222011981. The next prime is 222012019. The reversal of 222012013 is 310210222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64208169 + 157803844 = 8013^2 + 12562^2 .

It is a cyclic number.

It is not a de Polignac number, because 222012013 - 2⁵ = 222011981 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222011984 and 222012002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222012019) 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, 1247170 + ... + 1247347.

It is an arithmetic number, because the mean of its divisors is an integer number (56126655).

Almost surely, 2^222012013 is an apocalyptic number.

It is an amenable number.

222012013 is a deficient number, since it is larger than the sum of its proper divisors (2494607).

222012013 is an equidigital number, since it uses as much as digits as its factorization.

222012013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2494606.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 222012013 is about 14900.0675501824. The cubic root of 222012013 is about 605.5158162714.

Adding to 222012013 its reverse (310210222), we get a palindrome (532222235).

The spelling of 222012013 in words is "two hundred twenty-two million, twelve thousand, thirteen".