12100032021 has 24 divisors (see below), whose sum is σ = 20473526304. Its totient is φ = 6285730080.

The previous prime is 12100032001. The next prime is 12100032079. The reversal of 12100032021 is 12023000121.

It is not a de Polignac number, because 12100032021 - 2²³ = 12091643413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12100031988 and 12100032006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100032001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3739890 + ... + 3743123.

It is an arithmetic number, because the mean of its divisors is an integer number (853063596).

Almost surely, 2^12100032021 is an apocalyptic number.

12100032021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12100032021 is a deficient number, since it is larger than the sum of its proper divisors (8373494283).

12100032021 is a wasteful number, since it uses less digits than its factorization.

12100032021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7483041 (or 7483034 counting only the distinct ones).

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

Adding to 12100032021 its reverse (12023000121), we get a palindrome (24123032142).

The spelling of 12100032021 in words is "twelve billion, one hundred million, thirty-two thousand, twenty-one".