1226125001 has 2 divisors, whose sum is σ = 1226125002. Its totient is φ = 1226125000.

The previous prime is 1226124979. The next prime is 1226125003. The reversal of 1226125001 is 1005216221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 863184400 + 362940601 = 29380^2 + 19051^2 .

It is an emirp because it is prime and its reverse (1005216221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1226125001 - 2⁶ = 1226124937 is a prime.

Together with 1226125003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1226125003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613062500 + 613062501.

It is an arithmetic number, because the mean of its divisors is an integer number (613062501).

Almost surely, 2^1226125001 is an apocalyptic number.

It is an amenable number.

1226125001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226125001 is an equidigital number, since it uses as much as digits as its factorization.

1226125001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1226125001 is about 35016.0677546751. The cubic root of 1226125001 is about 1070.3149278256.

The spelling of 1226125001 in words is "one billion, two hundred twenty-six million, one hundred twenty-five thousand, one".