11801257229 has 2 divisors, whose sum is σ = 11801257230. Its totient is φ = 11801257228.

The previous prime is 11801257157. The next prime is 11801257277. The reversal of 11801257229 is 92275210811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8100360004 + 3700897225 = 90002^2 + 60835^2 .

It is a cyclic number.

It is not a de Polignac number, because 11801257229 - 2²⁰ = 11800208653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11801257192 and 11801257201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11801257729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5900628614 + 5900628615.

It is an arithmetic number, because the mean of its divisors is an integer number (5900628615).

Almost surely, 2^11801257229 is an apocalyptic number.

It is an amenable number.

11801257229 is a deficient number, since it is larger than the sum of its proper divisors (1).

11801257229 is an equidigital number, since it uses as much as digits as its factorization.

11801257229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 38.

The spelling of 11801257229 in words is "eleven billion, eight hundred one million, two hundred fifty-seven thousand, two hundred twenty-nine".