10011201997 has 2 divisors, whose sum is σ = 10011201998. Its totient is φ = 10011201996.

The previous prime is 10011201989. The next prime is 10011202007. The reversal of 10011201997 is 79910211001.

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., 9481695876 + 529506121 = 97374^2 + 23011^2 .

It is a cyclic number.

It is not a de Polignac number, because 10011201997 - 2³ = 10011201989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10011201197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005600998 + 5005600999.

It is an arithmetic number, because the mean of its divisors is an integer number (5005600999).

Almost surely, 2^10011201997 is an apocalyptic number.

It is an amenable number.

10011201997 is a deficient number, since it is larger than the sum of its proper divisors (1).

10011201997 is an equidigital number, since it uses as much as digits as its factorization.

10011201997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 31.

Adding to 10011201997 its reverse (79910211001), we get a palindrome (89921412998).

The spelling of 10011201997 in words is "ten billion, eleven million, two hundred one thousand, nine hundred ninety-seven".