126211760205 has 32 divisors (see below), whose sum is σ = 213863860224. Its totient is φ = 63425288256.

The previous prime is 126211760203. The next prime is 126211760287. The reversal of 126211760205 is 502067112621.

It is not a de Polignac number, because 126211760205 - 2¹ = 126211760203 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126211760201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2706969 + ... + 2753198.

It is an arithmetic number, because the mean of its divisors is an integer number (6683245632).

Almost surely, 2^126211760205 is an apocalyptic number.

126211760205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126211760205 is a deficient number, since it is larger than the sum of its proper divisors (87652100019).

126211760205 is a wasteful number, since it uses less digits than its factorization.

126211760205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5460265.

The product of its (nonzero) digits is 10080, while the sum is 33.

Adding to 126211760205 its reverse (502067112621), we get a palindrome (628278872826).

The spelling of 126211760205 in words is "one hundred twenty-six billion, two hundred eleven million, seven hundred sixty thousand, two hundred five".