126211807011 has 4 divisors (see below), whose sum is σ = 168282409352. Its totient is φ = 84141204672.

The previous prime is 126211807009. The next prime is 126211807013. The reversal of 126211807011 is 110708112621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110708112621 = 3 ⋅36902704207.

It is an interprime number because it is at equal distance from previous prime (126211807009) and next prime (126211807013).

It is not a de Polignac number, because 126211807011 - 2¹ = 126211807009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 126211807011.

It is not an unprimeable number, because it can be changed into a prime (126211807013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21035301166 + ... + 21035301171.

It is an arithmetic number, because the mean of its divisors is an integer number (42070602338).

Almost surely, 2^126211807011 is an apocalyptic number.

126211807011 is a deficient number, since it is larger than the sum of its proper divisors (42070602341).

126211807011 is an equidigital number, since it uses as much as digits as its factorization.

126211807011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42070602340.

The product of its (nonzero) digits is 1344, while the sum is 30.

Adding to 126211807011 its reverse (110708112621), we get a palindrome (236919919632).

The spelling of 126211807011 in words is "one hundred twenty-six billion, two hundred eleven million, eight hundred seven thousand, eleven".