22012221701 has 2 divisors, whose sum is σ = 22012221702. Its totient is φ = 22012221700.

The previous prime is 22012221697. The next prime is 22012221727. The reversal of 22012221701 is 10712221022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22008019201 + 4202500 = 148351^2 + 2050^2 .

It is a cyclic number.

It is not a de Polignac number, because 22012221701 - 2² = 22012221697 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22012221761) 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 as a sum of consecutive naturals, namely, 11006110850 + 11006110851.

It is an arithmetic number, because the mean of its divisors is an integer number (11006110851).

Almost surely, 2^22012221701 is an apocalyptic number.

It is an amenable number.

22012221701 is a deficient number, since it is larger than the sum of its proper divisors (1).

22012221701 is an equidigital number, since it uses as much as digits as its factorization.

22012221701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 20.

Adding to 22012221701 its reverse (10712221022), we get a palindrome (32724442723).

The spelling of 22012221701 in words is "twenty-two billion, twelve million, two hundred twenty-one thousand, seven hundred one".