2221235171201 has 2 divisors, whose sum is σ = 2221235171202. Its totient is φ = 2221235171200.

The previous prime is 2221235171131. The next prime is 2221235171213. The reversal of 2221235171201 is 1021715321222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2038615695601 + 182619475600 = 1427801^2 + 427340^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2221235171201 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2221235171401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110617585600 + 1110617585601.

It is an arithmetic number, because the mean of its divisors is an integer number (1110617585601).

Almost surely, 2^{2221235171201} is an apocalyptic number.

It is an amenable number.

2221235171201 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221235171201 is an equidigital number, since it uses as much as digits as its factorization.

2221235171201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 29.

The spelling of 2221235171201 in words is "two trillion, two hundred twenty-one billion, two hundred thirty-five million, one hundred seventy-one thousand, two hundred one".