1012011197 has 2 divisors, whose sum is σ = 1012011198. Its totient is φ = 1012011196.

The previous prime is 1012011179. The next prime is 1012011223. The reversal of 1012011197 is 7911102101.

It is a happy number.

Together with previous prime (1012011179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 971319556 + 40691641 = 31166^2 + 6379^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012011197 - 2²² = 1007816893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012011107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506005598 + 506005599.

It is an arithmetic number, because the mean of its divisors is an integer number (506005599).

Almost surely, 2^1012011197 is an apocalyptic number.

It is an amenable number.

1012011197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012011197 is an equidigital number, since it uses as much as digits as its factorization.

1012011197 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 1012011197 is about 31812.1234280266. The cubic root of 1012011197 is about 1003.9878085772.

Adding to 1012011197 its reverse (7911102101), we get a palindrome (8923113298).

The spelling of 1012011197 in words is "one billion, twelve million, eleven thousand, one hundred ninety-seven".