222120121021177 has 2 divisors, whose sum is σ = 222120121021178. Its totient is φ = 222120121021176.

The previous prime is 222120121021157. The next prime is 222120121021187. The reversal of 222120121021177 is 771120121021222.

222120121021177 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188321524934841 + 33798596086336 = 13723029^2 + 5813656^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222120121021177 is a prime.

It is a super-3 number, since 3×222120121021177³ (a number of 44 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (222120121021147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111060060510588 + 111060060510589.

It is an arithmetic number, because the mean of its divisors is an integer number (111060060510589).

Almost surely, 2^{222120121021177} is an apocalyptic number.

It is an amenable number.

222120121021177 is a deficient number, since it is larger than the sum of its proper divisors (1).

222120121021177 is an equidigital number, since it uses as much as digits as its factorization.

222120121021177 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3136, while the sum is 31.

Adding to 222120121021177 its reverse (771120121021222), we get a palindrome (993240242042399).

The spelling of 222120121021177 in words is "two hundred twenty-two trillion, one hundred twenty billion, one hundred twenty-one million, twenty-one thousand, one hundred seventy-seven".