201222210001 has 2 divisors, whose sum is σ = 201222210002. Its totient is φ = 201222210000.

The previous prime is 201222209983. The next prime is 201222210029. The reversal of 201222210001 is 100012222102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201220427776 + 1782225 = 448576^2 + 1335^2 .

It is a cyclic number.

It is not a de Polignac number, because 201222210001 - 2¹⁷ = 201222078929 is a prime.

It is not a weakly prime, because it can be changed into another prime (201222210041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100611105000 + 100611105001.

It is an arithmetic number, because the mean of its divisors is an integer number (100611105001).

Almost surely, 2^201222210001 is an apocalyptic number.

It is an amenable number.

201222210001 is a deficient number, since it is larger than the sum of its proper divisors (1).

201222210001 is an equidigital number, since it uses as much as digits as its factorization.

201222210001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 201222210001 its reverse (100012222102), we get a palindrome (301234432103).

The spelling of 201222210001 in words is "two hundred one billion, two hundred twenty-two million, two hundred ten thousand, one".