22202201261 has 2 divisors, whose sum is σ = 22202201262. Its totient is φ = 22202201260.

The previous prime is 22202201143. The next prime is 22202201279. The reversal of 22202201261 is 16210220222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21026740036 + 1175461225 = 145006^2 + 34285^2 .

It is a cyclic number.

It is not a de Polignac number, because 22202201261 - 2¹⁴ = 22202184877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22202201561) 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, 11101100630 + 11101100631.

It is an arithmetic number, because the mean of its divisors is an integer number (11101100631).

Almost surely, 2^22202201261 is an apocalyptic number.

It is an amenable number.

22202201261 is a deficient number, since it is larger than the sum of its proper divisors (1).

22202201261 is an equidigital number, since it uses as much as digits as its factorization.

22202201261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 22202201261 its reverse (16210220222), we get a palindrome (38412421483).

The spelling of 22202201261 in words is "twenty-two billion, two hundred two million, two hundred one thousand, two hundred sixty-one".