22222061 has 4 divisors (see below), whose sum is σ = 22293372. Its totient is φ = 22150752.

The previous prime is 22222051. The next prime is 22222063. The reversal of 22222061 is 16022222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 422500 + 21799561 = 650^2 + 4669^2 .

It is a cyclic number.

It is not a de Polignac number, because 22222061 - 2¹⁰ = 22221037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35186 + ... + 35811.

It is an arithmetic number, because the mean of its divisors is an integer number (5573343).

Almost surely, 2^22222061 is an apocalyptic number.

It is an amenable number.

22222061 is a deficient number, since it is larger than the sum of its proper divisors (71311).

22222061 is an equidigital number, since it uses as much as digits as its factorization.

22222061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71310.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 22222061 is about 4714.0281076803. The cubic root of 22222061 is about 281.1435418652.

Adding to 22222061 its reverse (16022222), we get a palindrome (38244283).

The spelling of 22222061 in words is "twenty-two million, two hundred twenty-two thousand, sixty-one".