221222010002201 has 4 divisors (see below), whose sum is σ = 238239087694692. Its totient is φ = 204204932309712.

The previous prime is 221222010002171. The next prime is 221222010002237. The reversal of 221222010002201 is 102200010222122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8881711248400 + 212340298753801 = 2980220^2 + 14571901^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221222010002201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221222010002201.

It is not an unprimeable number, because it can be changed into a prime (221222010002801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8508538846226 + ... + 8508538846251.

It is an arithmetic number, because the mean of its divisors is an integer number (59559771923673).

Almost surely, 2^{221222010002201} is an apocalyptic number.

It is an amenable number.

221222010002201 is a deficient number, since it is larger than the sum of its proper divisors (17017077692491).

221222010002201 is a wasteful number, since it uses less digits than its factorization.

221222010002201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17017077692490.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221222010002201 its reverse (102200010222122), we get a palindrome (323422020224323).

The spelling of 221222010002201 in words is "two hundred twenty-one trillion, two hundred twenty-two billion, ten million, two thousand, two hundred one".