1226126311 has 2 divisors, whose sum is σ = 1226126312. Its totient is φ = 1226126310.

The previous prime is 1226126303. The next prime is 1226126329. The reversal of 1226126311 is 1136216221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1226126311 - 2³ = 1226126303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1226126371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613063155 + 613063156.

It is an arithmetic number, because the mean of its divisors is an integer number (613063156).

Almost surely, 2^1226126311 is an apocalyptic number.

1226126311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226126311 is an equidigital number, since it uses as much as digits as its factorization.

1226126311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 25.

The square root of 1226126311 is about 35016.0864603685. The cubic root of 1226126311 is about 1070.3153090026.

The spelling of 1226126311 in words is "one billion, two hundred twenty-six million, one hundred twenty-six thousand, three hundred eleven".