12002102021 has 8 divisors (see below), whose sum is σ = 14771817984. Its totient is φ = 9496168560.

The previous prime is 12002101967. The next prime is 12002102041. The reversal of 12002102021 is 12020120021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12002102021 - 2²² = 11997907717 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12002101993 and 12002102011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002102041) 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, 65945525 + ... + 65945706.

It is an arithmetic number, because the mean of its divisors is an integer number (1846477248).

Almost surely, 2^12002102021 is an apocalyptic number.

It is an amenable number.

12002102021 is a deficient number, since it is larger than the sum of its proper divisors (2769715963).

12002102021 is a wasteful number, since it uses less digits than its factorization.

12002102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131891251.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12002102021 its reverse (12020120021), we get a palindrome (24022222042).

The spelling of 12002102021 in words is "twelve billion, two million, one hundred two thousand, twenty-one".