1201299997 has 2 divisors, whose sum is σ = 1201299998. Its totient is φ = 1201299996.

The previous prime is 1201299989. The next prime is 1201300007. The reversal of 1201299997 is 7999921021.

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., 1023104196 + 178195801 = 31986^2 + 13349^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201299997 - 2³ = 1201299989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1201299997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201299937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600649998 + 600649999.

It is an arithmetic number, because the mean of its divisors is an integer number (600649999).

Almost surely, 2^1201299997 is an apocalyptic number.

It is an amenable number.

1201299997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201299997 is an equidigital number, since it uses as much as digits as its factorization.

1201299997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 183708, while the sum is 49.

The square root of 1201299997 is about 34659.7749127140. The cubic root of 1201299997 is about 1063.0421676257.

The spelling of 1201299997 in words is "one billion, two hundred one million, two hundred ninety-nine thousand, nine hundred ninety-seven".