1222186068 has 18 divisors (see below), whose sum is σ = 3089414874. Its totient is φ = 407395344.

The previous prime is 1222186019. The next prime is 1222186079. The reversal of 1222186068 is 8606812221.

1222186068 is a `hidden beast` number, since 1 + 22 + 21 + 8 + 606 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1218568464 + 3617604 = 34908^2 + 1902^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 33949613 = 1222186068 / (1 + 2 + 2 + 2 + 1 + 8 + 6 + 0 + 6 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16974771 + ... + 16974842.

Almost surely, 2^1222186068 is an apocalyptic number.

1222186068 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1222186068 is an abundant number, since it is smaller than the sum of its proper divisors (1867228806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222186068 is a wasteful number, since it uses less digits than its factorization.

1222186068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33949623 (or 33949618 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 1222186068 is about 34959.7778597061. Note that the first 3 decimals coincide. The cubic root of 1222186068 is about 1069.1675675393.

Adding to 1222186068 its reverse (8606812221), we get a palindrome (9828998289).

It can be divided in two parts, 12221 and 86068, that added together give a palindrome (98289).

The spelling of 1222186068 in words is "one billion, two hundred twenty-two million, one hundred eighty-six thousand, sixty-eight".