7205188701121 has 2 divisors, whose sum is σ = 7205188701122. Its totient is φ = 7205188701120.

The previous prime is 7205188701097. The next prime is 7205188701169. The reversal of 7205188701121 is 1211078815027.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7152607918096 + 52580783025 = 2674436^2 + 229305^2 .

It is a cyclic number.

It is not a de Polignac number, because 7205188701121 - 2²¹ = 7205186603969 is a prime.

It is not a weakly prime, because it can be changed into another prime (7205189701121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3602594350560 + 3602594350561.

It is an arithmetic number, because the mean of its divisors is an integer number (3602594350561).

Almost surely, 2^{7205188701121} is an apocalyptic number.

It is an amenable number.

7205188701121 is a deficient number, since it is larger than the sum of its proper divisors (1).

7205188701121 is an equidigital number, since it uses as much as digits as its factorization.

7205188701121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62720, while the sum is 43.

The spelling of 7205188701121 in words is "seven trillion, two hundred five billion, one hundred eighty-eight million, seven hundred one thousand, one hundred twenty-one".