140521223412197 has 2 divisors, whose sum is σ = 140521223412198. Its totient is φ = 140521223412196.

The previous prime is 140521223412191. The next prime is 140521223412293. The reversal of 140521223412197 is 791214322125041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121808106762241 + 18713116649956 = 11036671^2 + 4325866^2 .

It is a cyclic number.

It is not a de Polignac number, because 140521223412197 - 2⁶ = 140521223412133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140521223412191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70260611706098 + 70260611706099.

It is an arithmetic number, because the mean of its divisors is an integer number (70260611706099).

Almost surely, 2^{140521223412197} is an apocalyptic number.

It is an amenable number.

140521223412197 is a deficient number, since it is larger than the sum of its proper divisors (1).

140521223412197 is an equidigital number, since it uses as much as digits as its factorization.

140521223412197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 140521223412197 in words is "one hundred forty trillion, five hundred twenty-one billion, two hundred twenty-three million, four hundred twelve thousand, one hundred ninety-seven".