75012121211011 has 4 divisors (see below), whose sum is σ = 75085734677400. Its totient is φ = 74938507744624.

The previous prime is 75012121211009. The next prime is 75012121211017. The reversal of 75012121211011 is 11011212121057.

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 75012121211011 - 2¹ = 75012121211009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75012121211017) 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, 36806731666 + ... + 36806733703.

It is an arithmetic number, because the mean of its divisors is an integer number (18771433669350).

Almost surely, 2^{75012121211011} is an apocalyptic number.

75012121211011 is a deficient number, since it is larger than the sum of its proper divisors (73613466389).

75012121211011 is a wasteful number, since it uses less digits than its factorization.

75012121211011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73613466388.

The product of its (nonzero) digits is 280, while the sum is 25.

Adding to 75012121211011 its reverse (11011212121057), we get a palindrome (86023333332068).

The spelling of 75012121211011 in words is "seventy-five trillion, twelve billion, one hundred twenty-one million, two hundred eleven thousand, eleven".