1216220246 has 8 divisors (see below), whose sum is σ = 1825740840. Its totient is φ = 607639968.

The previous prime is 1216220227. The next prime is 1216220251. The reversal of 1216220246 is 6420226121.

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, 231836 + ... + 237023.

It is an arithmetic number, because the mean of its divisors is an integer number (228217605).

Almost surely, 2^1216220246 is an apocalyptic number.

1216220246 is a deficient number, since it is larger than the sum of its proper divisors (609520594).

1216220246 is a wasteful number, since it uses less digits than its factorization.

1216220246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470158.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1216220246 is about 34874.3493989494. The cubic root of 1216220246 is about 1067.4250969132.

Adding to 1216220246 its reverse (6420226121), we get a palindrome (7636446367).

The spelling of 1216220246 in words is "one billion, two hundred sixteen million, two hundred twenty thousand, two hundred forty-six".