1300121197 has 2 divisors, whose sum is σ = 1300121198. Its totient is φ = 1300121196.

The previous prime is 1300121177. The next prime is 1300121203. The reversal of 1300121197 is 7911210031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 976625001 + 323496196 = 31251^2 + 17986^2 .

It is an emirp because it is prime and its reverse (7911210031) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1300121197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1300121107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650060598 + 650060599.

It is an arithmetic number, because the mean of its divisors is an integer number (650060599).

Almost surely, 2^1300121197 is an apocalyptic number.

It is an amenable number.

1300121197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1300121197 is an equidigital number, since it uses as much as digits as its factorization.

1300121197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 25.

The square root of 1300121197 is about 36057.1934154615. The cubic root of 1300121197 is about 1091.4267983003.

The spelling of 1300121197 in words is "one billion, three hundred million, one hundred twenty-one thousand, one hundred ninety-seven".