1121212601 has 2 divisors, whose sum is σ = 1121212602. Its totient is φ = 1121212600.

The previous prime is 1121212597. The next prime is 1121212627. The reversal of 1121212601 is 1062121211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1120642576 + 570025 = 33476^2 + 755^2 .

It is an emirp because it is prime and its reverse (1062121211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1121212601 - 2² = 1121212597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1121212601.

It is not a weakly prime, because it can be changed into another prime (1126212601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560606300 + 560606301.

It is an arithmetic number, because the mean of its divisors is an integer number (560606301).

Almost surely, 2^1121212601 is an apocalyptic number.

It is an amenable number.

1121212601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121212601 is an equidigital number, since it uses as much as digits as its factorization.

1121212601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 1121212601 is about 33484.5128529594. The cubic root of 1121212601 is about 1038.8734723089.

Adding to 1121212601 its reverse (1062121211), we get a palindrome (2183333812).

The spelling of 1121212601 in words is "one billion, one hundred twenty-one million, two hundred twelve thousand, six hundred one".