1226202797 has 2 divisors, whose sum is σ = 1226202798. Its totient is φ = 1226202796.

The previous prime is 1226202767. The next prime is 1226202821. The reversal of 1226202797 is 7972026221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1042708681 + 183494116 = 32291^2 + 13546^2 .

It is a cyclic number.

It is not a de Polignac number, because 1226202797 - 2²⁰ = 1225154221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1226202797.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1226202767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613101398 + 613101399.

It is an arithmetic number, because the mean of its divisors is an integer number (613101399).

Almost surely, 2^1226202797 is an apocalyptic number.

It is an amenable number.

1226202797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226202797 is an equidigital number, since it uses as much as digits as its factorization.

1226202797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 1226202797 is about 35017.1785985108. The cubic root of 1226202797 is about 1070.3375640329.

The spelling of 1226202797 in words is "one billion, two hundred twenty-six million, two hundred two thousand, seven hundred ninety-seven".