12021111012021 has 8 divisors (see below), whose sum is σ = 16033075218720. Its totient is φ = 8011610406672.

The previous prime is 12021111011999. The next prime is 12021111012041. The reversal of 12021111012021 is 12021011112021.

It is a happy number.

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

It is not a de Polignac number, because 12021111012021 - 2³³ = 12012521077429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021111012041) 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, 615888951 + ... + 615908468.

It is an arithmetic number, because the mean of its divisors is an integer number (2004134402340).

Almost surely, 2^{12021111012021} is an apocalyptic number.

It is an amenable number.

12021111012021 is a deficient number, since it is larger than the sum of its proper divisors (4011964206699).

12021111012021 is a wasteful number, since it uses less digits than its factorization.

12021111012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231800675.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12021111012021 its reverse (12021011112021), we get a palindrome (24042122124042).

The spelling of 12021111012021 in words is "twelve trillion, twenty-one billion, one hundred eleven million, twelve thousand, twenty-one".