222121002020201 has 2 divisors, whose sum is σ = 222121002020202. Its totient is φ = 222121002020200.

The previous prime is 222121002020179. The next prime is 222121002020213. The reversal of 222121002020201 is 102020200121222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 215533258464601 + 6587743555600 = 14681051^2 + 2566660^2 .

It is a cyclic number.

It is not a de Polignac number, because 222121002020201 - 2⁴² = 217722955509097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222121002020201.

It is not a weakly prime, because it can be changed into another prime (222121002020251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111060501010100 + 111060501010101.

It is an arithmetic number, because the mean of its divisors is an integer number (111060501010101).

Almost surely, 2^{222121002020201} is an apocalyptic number.

It is an amenable number.

222121002020201 is a deficient number, since it is larger than the sum of its proper divisors (1).

222121002020201 is an equidigital number, since it uses as much as digits as its factorization.

222121002020201 is an odious number, because the sum of its binary digits is odd.

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

Adding to 222121002020201 its reverse (102020200121222), we get a palindrome (324141202141423).

The spelling of 222121002020201 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, two million, twenty thousand, two hundred one".