2221202211601 has 2 divisors, whose sum is σ = 2221202211602. Its totient is φ = 2221202211600.

The previous prime is 2221202211551. The next prime is 2221202211611. The reversal of 2221202211601 is 1061122021222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2076192810000 + 145009401601 = 1440900^2 + 380801^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221202211601 - 2²³ = 2221193822993 is a prime.

It is not a weakly prime, because it can be changed into another prime (2221202211611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110601105800 + 1110601105801.

It is an arithmetic number, because the mean of its divisors is an integer number (1110601105801).

Almost surely, 2^{2221202211601} is an apocalyptic number.

It is an amenable number.

2221202211601 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221202211601 is an equidigital number, since it uses as much as digits as its factorization.

2221202211601 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 22.

Adding to 2221202211601 its reverse (1061122021222), we get a palindrome (3282324232823).

The spelling of 2221202211601 in words is "two trillion, two hundred twenty-one billion, two hundred two million, two hundred eleven thousand, six hundred one".