120202021217 has 2 divisors, whose sum is σ = 120202021218. Its totient is φ = 120202021216.

The previous prime is 120202021201. The next prime is 120202021229. The reversal of 120202021217 is 712120202021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77751187921 + 42450833296 = 278839^2 + 206036^2 .

It is a cyclic number.

It is not a de Polignac number, because 120202021217 - 2⁴ = 120202021201 is a prime.

It is a super-2 number, since 2×120202021217² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (120202021237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60101010608 + 60101010609.

It is an arithmetic number, because the mean of its divisors is an integer number (60101010609).

Almost surely, 2^120202021217 is an apocalyptic number.

It is an amenable number.

120202021217 is a deficient number, since it is larger than the sum of its proper divisors (1).

120202021217 is an equidigital number, since it uses as much as digits as its factorization.

120202021217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 20.

Adding to 120202021217 its reverse (712120202021), we get a palindrome (832322223238).

The spelling of 120202021217 in words is "one hundred twenty billion, two hundred two million, twenty-one thousand, two hundred seventeen".