11012231129 has 2 divisors, whose sum is σ = 11012231130. Its totient is φ = 11012231128.

The previous prime is 11012231107. The next prime is 11012231141. The reversal of 11012231129 is 92113221011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10680809104 + 331422025 = 103348^2 + 18205^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11012231129 is a prime.

It is a super-2 number, since 2×11012231129² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11012236129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5506115564 + 5506115565.

It is an arithmetic number, because the mean of its divisors is an integer number (5506115565).

Almost surely, 2^11012231129 is an apocalyptic number.

It is an amenable number.

11012231129 is a deficient number, since it is larger than the sum of its proper divisors (1).

11012231129 is an equidigital number, since it uses as much as digits as its factorization.

11012231129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 11012231129 in words is "eleven billion, twelve million, two hundred thirty-one thousand, one hundred twenty-nine".