75121221201011 has 8 divisors (see below), whose sum is σ = 77220594818640. Its totient is φ = 73025482864608.

The previous prime is 75121221200969. The next prime is 75121221201029. The reversal of 75121221201011 is 11010212212157.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75121221201011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75121221201031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 908778401 + ... + 908861058.

It is an arithmetic number, because the mean of its divisors is an integer number (9652574352330).

Almost surely, 2^{75121221201011} is an apocalyptic number.

75121221201011 is a deficient number, since it is larger than the sum of its proper divisors (2099373617629).

75121221201011 is a wasteful number, since it uses less digits than its factorization.

75121221201011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1817640613.

The product of its (nonzero) digits is 560, while the sum is 26.

Adding to 75121221201011 its reverse (11010212212157), we get a palindrome (86131433413168).

The spelling of 75121221201011 in words is "seventy-five trillion, one hundred twenty-one billion, two hundred twenty-one million, two hundred one thousand, eleven".