1226145133 has 4 divisors (see below), whose sum is σ = 1226386620. Its totient is φ = 1225903648.

The previous prime is 1226145131. The next prime is 1226145149. The reversal of 1226145133 is 3315416221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 372219849 + 853925284 = 19293^2 + 29222^2 .

It is a cyclic number.

It is not a de Polignac number, because 1226145133 - 2¹ = 1226145131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226145131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112960 + ... + 123337.

It is an arithmetic number, because the mean of its divisors is an integer number (306596655).

Almost surely, 2^1226145133 is an apocalyptic number.

It is an amenable number.

1226145133 is a deficient number, since it is larger than the sum of its proper divisors (241487).

1226145133 is an equidigital number, since it uses as much as digits as its factorization.

1226145133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241486.

The product of its digits is 4320, while the sum is 28.

The square root of 1226145133 is about 35016.3552215247. The cubic root of 1226145133 is about 1070.3207857009.

The spelling of 1226145133 in words is "one billion, two hundred twenty-six million, one hundred forty-five thousand, one hundred thirty-three".