1226136511 has 2 divisors, whose sum is σ = 1226136512. Its totient is φ = 1226136510.

The previous prime is 1226136487. The next prime is 1226136547. The reversal of 1226136511 is 1156316221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1226136511 - 2⁷ = 1226136383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1226136511.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1226130511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613068255 + 613068256.

It is an arithmetic number, because the mean of its divisors is an integer number (613068256).

Almost surely, 2^1226136511 is an apocalyptic number.

1226136511 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226136511 is an equidigital number, since it uses as much as digits as its factorization.

1226136511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 28.

The square root of 1226136511 is about 35016.2321074098. The cubic root of 1226136511 is about 1070.3182769366.

The spelling of 1226136511 in words is "one billion, two hundred twenty-six million, one hundred thirty-six thousand, five hundred eleven".