2212406 has 8 divisors (see below), whose sum is σ = 3792720. Its totient is φ = 948168.

The previous prime is 2212391. The next prime is 2212421. The reversal of 2212406 is 6042122.

It is an interprime number because it is at equal distance from previous prime (2212391) and next prime (2212421).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79001 + ... + 79028.

It is an arithmetic number, because the mean of its divisors is an integer number (474090).

2^2212406 is an apocalyptic number.

2212406 is a deficient number, since it is larger than the sum of its proper divisors (1580314).

2212406 is a wasteful number, since it uses less digits than its factorization.

2212406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158038.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2212406 is about 1487.4158799744. The cubic root of 2212406 is about 130.3031583667.

Adding to 2212406 its reverse (6042122), we get a palindrome (8254528).

The spelling of 2212406 in words is "two million, two hundred twelve thousand, four hundred six".