1222210202201 has 4 divisors (see below), whose sum is σ = 1222369497012. Its totient is φ = 1222050907392.

The previous prime is 1222210202197. The next prime is 1222210202233. The reversal of 1222210202201 is 1022020122221.

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 718502046025 + 503708156176 = 847645^2 + 709724^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222210202201 - 2² = 1222210202197 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 1222210202201.

It is not an unprimeable number, because it can be changed into a prime (1222210207201) 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, 79635896 + ... + 79651241.

It is an arithmetic number, because the mean of its divisors is an integer number (305592374253).

Almost surely, 2^{1222210202201} is an apocalyptic number.

It is an amenable number.

1222210202201 is a deficient number, since it is larger than the sum of its proper divisors (159294811).

1222210202201 is an equidigital number, since it uses as much as digits as its factorization.

1222210202201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159294810.

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

Adding to 1222210202201 its reverse (1022020122221), we get a palindrome (2244230324422).

The spelling of 1222210202201 in words is "one trillion, two hundred twenty-two billion, two hundred ten million, two hundred two thousand, two hundred one".