216236244144226 has 16 divisors (see below), whose sum is σ = 327545518813920. Its totient is φ = 107058016484640.

The previous prime is 216236244144209. The next prime is 216236244144247. The reversal of 216236244144226 is 622441442632612.

It is a happy number.

It is a super-2 number, since 2×216236244144226² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 216236244144226.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 902866236 + ... + 903105703.

It is an arithmetic number, because the mean of its divisors is an integer number (20471594925870).

Almost surely, 2^{216236244144226} is an apocalyptic number.

216236244144226 is a deficient number, since it is larger than the sum of its proper divisors (111309274669694).

216236244144226 is a wasteful number, since it uses less digits than its factorization.

216236244144226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1805972529.

The product of its digits is 5308416, while the sum is 49.

Adding to 216236244144226 its reverse (622441442632612), we get a palindrome (838677686776838).

The spelling of 216236244144226 in words is "two hundred sixteen trillion, two hundred thirty-six billion, two hundred forty-four million, one hundred forty-four thousand, two hundred twenty-six".