1226511135 has 12 divisors (see below), whose sum is σ = 2125952712. Its totient is φ = 654139248.

The previous prime is 1226511109. The next prime is 1226511137. The reversal of 1226511135 is 5311156221.

1226511135 is a `hidden beast` number, since 1 + 2 + 2 + 651 + 1 + 1 + 3 + 5 = 666.

It is not a de Polignac number, because 1226511135 - 2⁶ = 1226511071 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1226511099 and 1226511108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226511137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13627857 + ... + 13627946.

It is an arithmetic number, because the mean of its divisors is an integer number (177162726).

Almost surely, 2^1226511135 is an apocalyptic number.

1226511135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1226511135 is a deficient number, since it is larger than the sum of its proper divisors (899441577).

1226511135 is a wasteful number, since it uses less digits than its factorization.

1226511135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27255814 (or 27255811 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 1226511135 is about 35021.5809894414. The cubic root of 1226511135 is about 1070.4272713488.

Adding to 1226511135 its reverse (5311156221), we get a palindrome (6537667356).

The spelling of 1226511135 in words is "one billion, two hundred twenty-six million, five hundred eleven thousand, one hundred thirty-five".