2212145 has 8 divisors (see below), whose sum is σ = 2858856. Its totient is φ = 1633536.

The previous prime is 2212141. The next prime is 2212153. The reversal of 2212145 is 5412122.

It can be written as a sum of positive squares in 4 ways, for example, as 118336 + 2093809 = 344^2 + 1447^2 .

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 2212145 - 2² = 2212141 is a prime.

It is a d-powerful number, because it can be written as 2 + 2¹⁵ + 1 + 2²¹ + 1 + 4⁶ + 5⁷ .

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212141) 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, 16952 + ... + 17081.

It is an arithmetic number, because the mean of its divisors is an integer number (357357).

2^2212145 is an apocalyptic number.

It is an amenable number.

2212145 is a deficient number, since it is larger than the sum of its proper divisors (646711).

2212145 is a wasteful number, since it uses less digits than its factorization.

2212145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34051.

The product of its digits is 160, while the sum is 17.

The square root of 2212145 is about 1487.3281413326. The cubic root of 2212145 is about 130.2980341623.

Adding to 2212145 its reverse (5412122), we get a palindrome (7624267).

It can be divided in two parts, 22 and 12145, that added together give a cube (12167 = 23³).

The spelling of 2212145 in words is "two million, two hundred twelve thousand, one hundred forty-five".