75127011221001 has 16 divisors (see below), whose sum is σ = 103404688056320. Its totient is φ = 48467131468560.

The previous prime is 75127011220901. The next prime is 75127011221051. The reversal of 75127011221001 is 10012211072157.

It is not a de Polignac number, because 75127011221001 - 2¹⁷ = 75127011089929 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 75127011221001.

It is not an unprimeable number, because it can be changed into a prime (75127011221051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13523191 + ... + 18251868.

It is an arithmetic number, because the mean of its divisors is an integer number (6462793003520).

Almost surely, 2^{75127011221001} is an apocalyptic number.

It is an amenable number.

75127011221001 is a deficient number, since it is larger than the sum of its proper divisors (28277676835319).

75127011221001 is a wasteful number, since it uses less digits than its factorization.

75127011221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31800516.

The product of its (nonzero) digits is 1960, while the sum is 30.

Adding to 75127011221001 its reverse (10012211072157), we get a palindrome (85139222293158).

The spelling of 75127011221001 in words is "seventy-five trillion, one hundred twenty-seven billion, eleven million, two hundred twenty-one thousand, one".