22000061 has 2 divisors, whose sum is σ = 22000062. Its totient is φ = 22000060.

The previous prime is 22000037. The next prime is 22000087. The reversal of 22000061 is 16000022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13734436 + 8265625 = 3706^2 + 2875^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22000061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22000001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11000030 + 11000031.

It is an arithmetic number, because the mean of its divisors is an integer number (11000031).

Almost surely, 2^22000061 is an apocalyptic number.

It is an amenable number.

22000061 is a deficient number, since it is larger than the sum of its proper divisors (1).

22000061 is an equidigital number, since it uses as much as digits as its factorization.

22000061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 22000061 is about 4690.4222624408. The cubic root of 22000061 is about 280.2041920417.

Adding to 22000061 its reverse (16000022), we get a palindrome (38000083).

The spelling of 22000061 in words is "twenty-two million, sixty-one", and thus it is an aban number and an uban number.