126120166111 has 4 divisors (see below), whose sum is σ = 126123238800. Its totient is φ = 126117093424.

The previous prime is 126120166027. The next prime is 126120166153. The reversal of 126120166111 is 111661021621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 126120166111 - 2⁹ = 126120165599 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 126120166111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126120166411) 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, 1473931 + ... + 1557148.

It is an arithmetic number, because the mean of its divisors is an integer number (31530809700).

Almost surely, 2^126120166111 is an apocalyptic number.

126120166111 is a deficient number, since it is larger than the sum of its proper divisors (3072689).

126120166111 is an equidigital number, since it uses as much as digits as its factorization.

126120166111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3072688.

The product of its (nonzero) digits is 864, while the sum is 28.

Adding to 126120166111 its reverse (111661021621), we get a palindrome (237781187732).

The spelling of 126120166111 in words is "one hundred twenty-six billion, one hundred twenty million, one hundred sixty-six thousand, one hundred eleven".