12000102021 has 8 divisors (see below), whose sum is σ = 17777928960. Its totient is φ = 8000067996.

The previous prime is 12000102013. The next prime is 12000102029. The reversal of 12000102021 is 12020100021.

It is an interprime number because it is at equal distance from previous prime (12000102013) and next prime (12000102029).

It is not a de Polignac number, because 12000102021 - 2³ = 12000102013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12000101994 and 12000102012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000102029) 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, 222224085 + ... + 222224138.

It is an arithmetic number, because the mean of its divisors is an integer number (2222241120).

Almost surely, 2^12000102021 is an apocalyptic number.

It is an amenable number.

12000102021 is a deficient number, since it is larger than the sum of its proper divisors (5777826939).

12000102021 is an equidigital number, since it uses as much as digits as its factorization.

12000102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444448232 (or 444448226 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 12000102021 its reverse (12020100021), we get a palindrome (24020202042).

The spelling of 12000102021 in words is "twelve billion, one hundred two thousand, twenty-one".