612171220222 has 16 divisors (see below), whose sum is σ = 925428656880. Its totient is φ = 303697695168.

The previous prime is 612171220201. The next prime is 612171220249. The reversal of 612171220222 is 222022171216.

It is a congruent number.

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, 217503 + ... + 1127674.

It is an arithmetic number, because the mean of its divisors is an integer number (57839291055).

Almost surely, 2^612171220222 is an apocalyptic number.

612171220222 is a deficient number, since it is larger than the sum of its proper divisors (313257436658).

612171220222 is a wasteful number, since it uses less digits than its factorization.

612171220222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346955.

The product of its (nonzero) digits is 2688, while the sum is 28.

Adding to 612171220222 its reverse (222022171216), we get a palindrome (834193391438).

The spelling of 612171220222 in words is "six hundred twelve billion, one hundred seventy-one million, two hundred twenty thousand, two hundred twenty-two".