10211120197 has 4 divisors (see below), whose sum is σ = 10563227820. Its totient is φ = 9859012576.

The previous prime is 10211120141. The next prime is 10211120209. The reversal of 10211120197 is 79102111201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8109722916 + 2101397281 = 90054^2 + 45841^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10211120197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211120137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176053768 + ... + 176053825.

It is an arithmetic number, because the mean of its divisors is an integer number (2640806955).

Almost surely, 2^10211120197 is an apocalyptic number.

It is an amenable number.

10211120197 is a deficient number, since it is larger than the sum of its proper divisors (352107623).

10211120197 is an equidigital number, since it uses as much as digits as its factorization.

10211120197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352107622.

The product of its (nonzero) digits is 252, while the sum is 25.

Adding to 10211120197 its reverse (79102111201), we get a palindrome (89313231398).

The spelling of 10211120197 in words is "ten billion, two hundred eleven million, one hundred twenty thousand, one hundred ninety-seven".