100147332521 has 4 divisors (see below), whose sum is σ = 100164460500. Its totient is φ = 100130204544.

The previous prime is 100147332517. The next prime is 100147332533. The reversal of 100147332521 is 125233741001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 125233741001 = 383 ⋅326981047.

It can be written as a sum of positive squares in 2 ways, for example, as 72973458496 + 27173874025 = 270136^2 + 164845^2 .

It is a cyclic number.

It is not a de Polignac number, because 100147332521 - 2² = 100147332517 is a prime.

It is a super-2 number, since 2×100147332521² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100147332221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8555216 + ... + 8566913.

It is an arithmetic number, because the mean of its divisors is an integer number (25041115125).

Almost surely, 2^100147332521 is an apocalyptic number.

It is an amenable number.

100147332521 is a deficient number, since it is larger than the sum of its proper divisors (17127979).

100147332521 is an equidigital number, since it uses as much as digits as its factorization.

100147332521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17127978.

The product of its (nonzero) digits is 5040, while the sum is 29.

The spelling of 100147332521 in words is "one hundred billion, one hundred forty-seven million, three hundred thirty-two thousand, five hundred twenty-one".