222000061 has 2 divisors, whose sum is σ = 222000062. Its totient is φ = 222000060.

The previous prime is 222000043. The next prime is 222000101. The reversal of 222000061 is 160000222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191684025 + 30316036 = 13845^2 + 5506^2 .

It is a cyclic number.

It is not a de Polignac number, because 222000061 - 2²¹ = 219902909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222000461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111000030 + 111000031.

It is an arithmetic number, because the mean of its divisors is an integer number (111000031).

Almost surely, 2^222000061 is an apocalyptic number.

It is an amenable number.

222000061 is a deficient number, since it is larger than the sum of its proper divisors (1).

222000061 is an equidigital number, since it uses as much as digits as its factorization.

222000061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 222000061 is about 14899.6664727772. Note that the first 3 decimals coincide. The cubic root of 222000061 is about 605.5049501103.

Adding to 222000061 its reverse (160000222), we get a palindrome (382000283).

The spelling of 222000061 in words is "two hundred twenty-two million, sixty-one", and thus it is an aban number.