1228134491131 has 2 divisors, whose sum is σ = 1228134491132. Its totient is φ = 1228134491130.

The previous prime is 1228134491107. The next prime is 1228134491141. The reversal of 1228134491131 is 1311944318221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1228134491131 - 2¹¹ = 1228134489083 is a prime.

It is a super-2 number, since 2×1228134491131² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1228134491141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614067245565 + 614067245566.

It is an arithmetic number, because the mean of its divisors is an integer number (614067245566).

Almost surely, 2^{1228134491131} is an apocalyptic number.

1228134491131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228134491131 is an equidigital number, since it uses as much as digits as its factorization.

1228134491131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 40.

The spelling of 1228134491131 in words is "one trillion, two hundred twenty-eight billion, one hundred thirty-four million, four hundred ninety-one thousand, one hundred thirty-one".