100012505501 has 8 divisors (see below), whose sum is σ = 105283197600. Its totient is φ = 94742501040.

The previous prime is 100012505479. The next prime is 100012505543. The reversal of 100012505501 is 105505210001.

It is a happy number.

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-100012505501 is a prime.

It is a super-2 number, since 2×100012505501² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100012505591) 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, 141290 + ... + 469028.

It is an arithmetic number, because the mean of its divisors is an integer number (13160399700).

Almost surely, 2^100012505501 is an apocalyptic number.

It is an amenable number.

100012505501 is a deficient number, since it is larger than the sum of its proper divisors (5270692099).

100012505501 is a wasteful number, since it uses less digits than its factorization.

100012505501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343819.

The product of its (nonzero) digits is 250, while the sum is 20.

Adding to 100012505501 its reverse (105505210001), we get a palindrome (205517715502).

The spelling of 100012505501 in words is "one hundred billion, twelve million, five hundred five thousand, five hundred one".