16781000222 has 64 divisors (see below), whose sum is σ = 30517724160. Its totient is φ = 6760454400.

The previous prime is 16781000219. The next prime is 16781000227. The reversal of 16781000222 is 22200018761.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16781000227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34457663 + ... + 34458149.

It is an arithmetic number, because the mean of its divisors is an integer number (476839440).

Almost surely, 2^16781000222 is an apocalyptic number.

It is a pronic number, being equal to 129541×129542.

16781000222 is a deficient number, since it is larger than the sum of its proper divisors (13736723938).

16781000222 is a wasteful number, since it uses less digits than its factorization.

16781000222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257.

The product of its (nonzero) digits is 2688, while the sum is 29.

Adding to 16781000222 its reverse (22200018761), we get a palindrome (38981018983).

The spelling of 16781000222 in words is "sixteen billion, seven hundred eighty-one million, two hundred twenty-two", and thus it is an aban number.