100133132021 has 4 divisors (see below), whose sum is σ = 107835680652. Its totient is φ = 92430583392.

The previous prime is 100133131949. The next prime is 100133132039. The reversal of 100133132021 is 120231331001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49974602500 + 50158529521 = 223550^2 + 223961^2 .

It is a cyclic number.

It is not a de Polignac number, because 100133132021 - 2¹⁴ = 100133115637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100133132041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3851274296 + ... + 3851274321.

It is an arithmetic number, because the mean of its divisors is an integer number (26958920163).

Almost surely, 2^100133132021 is an apocalyptic number.

It is an amenable number.

100133132021 is a deficient number, since it is larger than the sum of its proper divisors (7702548631).

100133132021 is an equidigital number, since it uses as much as digits as its factorization.

100133132021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7702548630.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 100133132021 its reverse (120231331001), we get a palindrome (220364463022).

The spelling of 100133132021 in words is "one hundred billion, one hundred thirty-three million, one hundred thirty-two thousand, twenty-one".