421102201220497 has 2 divisors, whose sum is σ = 421102201220498. Its totient is φ = 421102201220496.

The previous prime is 421102201220401. The next prime is 421102201220549. The reversal of 421102201220497 is 794022102201124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 231600794286096 + 189501406934401 = 15218436^2 + 13765951^2 .

It is a cyclic number.

It is not a de Polignac number, because 421102201220497 - 2¹¹ = 421102201218449 is a prime.

It is not a weakly prime, because it can be changed into another prime (421102201223497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210551100610248 + 210551100610249.

It is an arithmetic number, because the mean of its divisors is an integer number (210551100610249).

Almost surely, 2^{421102201220497} is an apocalyptic number.

It is an amenable number.

421102201220497 is a deficient number, since it is larger than the sum of its proper divisors (1).

421102201220497 is an equidigital number, since it uses as much as digits as its factorization.

421102201220497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 37.

The spelling of 421102201220497 in words is "four hundred twenty-one trillion, one hundred two billion, two hundred one million, two hundred twenty thousand, four hundred ninety-seven".