30122203312261 has 2 divisors, whose sum is σ = 30122203312262. Its totient is φ = 30122203312260.

The previous prime is 30122203312199. The next prime is 30122203312277. The reversal of 30122203312261 is 16221330222103.

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., 28136330488161 + 1985872824100 = 5304369^2 + 1409210^2 .

It is a cyclic number.

It is not a de Polignac number, because 30122203312261 - 2³¹ = 30120055828613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30122203312361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15061101656130 + 15061101656131.

It is an arithmetic number, because the mean of its divisors is an integer number (15061101656131).

Almost surely, 2^{30122203312261} is an apocalyptic number.

It is an amenable number.

30122203312261 is a deficient number, since it is larger than the sum of its proper divisors (1).

30122203312261 is an equidigital number, since it uses as much as digits as its factorization.

30122203312261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 30122203312261 its reverse (16221330222103), we get a palindrome (46343533534364).

The spelling of 30122203312261 in words is "thirty trillion, one hundred twenty-two billion, two hundred three million, three hundred twelve thousand, two hundred sixty-one".