1011210197 has 2 divisors, whose sum is σ = 1011210198. Its totient is φ = 1011210196.

The previous prime is 1011210181. The next prime is 1011210227. The reversal of 1011210197 is 7910121101.

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., 992943121 + 18267076 = 31511^2 + 4274^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011210197 - 2⁴ = 1011210181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011210997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505605098 + 505605099.

It is an arithmetic number, because the mean of its divisors is an integer number (505605099).

Almost surely, 2^1011210197 is an apocalyptic number.

It is an amenable number.

1011210197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011210197 is an equidigital number, since it uses as much as digits as its factorization.

1011210197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126, while the sum is 23.

The square root of 1011210197 is about 31799.5313959184. The cubic root of 1011210197 is about 1003.7228554812.

Adding to 1011210197 its reverse (7910121101), we get a palindrome (8921331298).

The spelling of 1011210197 in words is "one billion, eleven million, two hundred ten thousand, one hundred ninety-seven".