12001220002021 has 8 divisors (see below), whose sum is σ = 12106822740480. Its totient is φ = 11896045672992.

The previous prime is 12001220001997. The next prime is 12001220002147. The reversal of 12001220002021 is 12020002210021.

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 12001220002021 - 2⁹ = 12001220001509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12001220001992 and 12001220002010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001220072021) 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, 107046085 + ... + 107158138.

It is an arithmetic number, because the mean of its divisors is an integer number (1513352842560).

Almost surely, 2^{12001220002021} is an apocalyptic number.

It is an amenable number.

12001220002021 is a deficient number, since it is larger than the sum of its proper divisors (105602738459).

12001220002021 is a wasteful number, since it uses less digits than its factorization.

12001220002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214204715.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12001220002021 its reverse (12020002210021), we get a palindrome (24021222212042).

The spelling of 12001220002021 in words is "twelve trillion, one billion, two hundred twenty million, two thousand, twenty-one".