12100230021 has 12 divisors (see below), whose sum is σ = 17733670976. Its totient is φ = 7333472520.

The previous prime is 12100230007. The next prime is 12100230059. The reversal of 12100230021 is 12003200121.

It is not a de Polignac number, because 12100230021 - 2²⁵ = 12066675589 is a prime.

It is a super-3 number, since 3×12100230021³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12100229979 and 12100230006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100230061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16666621 + ... + 16667346.

Almost surely, 2^12100230021 is an apocalyptic number.

12100230021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12100230021 is a deficient number, since it is larger than the sum of its proper divisors (5633440955).

12100230021 is a wasteful number, since it uses less digits than its factorization.

12100230021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33333992 (or 33333981 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 12100230021 its reverse (12003200121), we get a palindrome (24103430142).

The spelling of 12100230021 in words is "twelve billion, one hundred million, two hundred thirty thousand, twenty-one".