75120002101 has 8 divisors (see below), whose sum is σ = 79549271640. Its totient is φ = 70691893248.

The previous prime is 75120002077. The next prime is 75120002117. The reversal of 75120002101 is 10120002157.

It can be written as a sum of positive squares in 4 ways, for example, as 20480472100 + 54639530001 = 143110^2 + 233751^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 75120002101 - 2²⁷ = 74985784373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75120002141) 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, 155116 + ... + 417493.

It is an arithmetic number, because the mean of its divisors is an integer number (9943658955).

Almost surely, 2^75120002101 is an apocalyptic number.

It is an amenable number.

75120002101 is a deficient number, since it is larger than the sum of its proper divisors (4429269539).

75120002101 is a wasteful number, since it uses less digits than its factorization.

75120002101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580343.

The product of its (nonzero) digits is 140, while the sum is 19.

Adding to 75120002101 its reverse (10120002157), we get a palindrome (85240004258).

The spelling of 75120002101 in words is "seventy-five billion, one hundred twenty million, two thousand, one hundred one".