221121200033 has 2 divisors, whose sum is σ = 221121200034. Its totient is φ = 221121200032.

The previous prime is 221121199979. The next prime is 221121200057. The reversal of 221121200033 is 330002121122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 221057007889 + 64192144 = 470167^2 + 8012^2 .

It is a cyclic number.

It is not a de Polignac number, because 221121200033 - 2¹⁰ = 221121199009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221121199984 and 221121200020.

It is not a weakly prime, because it can be changed into another prime (221120200033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110560600016 + 110560600017.

It is an arithmetic number, because the mean of its divisors is an integer number (110560600017).

Almost surely, 2^221121200033 is an apocalyptic number.

It is an amenable number.

221121200033 is a deficient number, since it is larger than the sum of its proper divisors (1).

221121200033 is an equidigital number, since it uses as much as digits as its factorization.

221121200033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 221121200033 its reverse (330002121122), we get a palindrome (551123321155).

The spelling of 221121200033 in words is "two hundred twenty-one billion, one hundred twenty-one million, two hundred thousand, thirty-three".