2217142450406 has 32 divisors (see below), whose sum is σ = 3585646165248. Its totient is φ = 1022123377440.

The previous prime is 2217142450387. The next prime is 2217142450427. The reversal of 2217142450406 is 6040542417122.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2217142450406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90694421 + ... + 90718863.

It is an arithmetic number, because the mean of its divisors is an integer number (112051442664).

Almost surely, 2^{2217142450406} is an apocalyptic number.

2217142450406 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2217142450406 is a deficient number, since it is larger than the sum of its proper divisors (1368503714842).

2217142450406 is a wasteful number, since it uses less digits than its factorization.

2217142450406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28316.

The product of its (nonzero) digits is 107520, while the sum is 38.

Adding to 2217142450406 its reverse (6040542417122), we get a palindrome (8257684867528).

The spelling of 2217142450406 in words is "two trillion, two hundred seventeen billion, one hundred forty-two million, four hundred fifty thousand, four hundred six".