420011109997 has 2 divisors, whose sum is σ = 420011109998. Its totient is φ = 420011109996.

The previous prime is 420011109983. The next prime is 420011110003. The reversal of 420011109997 is 799901110024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 368765922121 + 51245187876 = 607261^2 + 226374^2 .

It is a cyclic number.

It is not a de Polignac number, because 420011109997 - 2¹¹ = 420011107949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420011109907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210005554998 + 210005554999.

It is an arithmetic number, because the mean of its divisors is an integer number (210005554999).

Almost surely, 2^420011109997 is an apocalyptic number.

It is an amenable number.

420011109997 is a deficient number, since it is larger than the sum of its proper divisors (1).

420011109997 is an equidigital number, since it uses as much as digits as its factorization.

420011109997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 43.

The spelling of 420011109997 in words is "four hundred twenty billion, eleven million, one hundred nine thousand, nine hundred ninety-seven".