12021110012020 has 24 divisors (see below), whose sum is σ = 25599884986368. Its totient is φ = 4740719440800.

The previous prime is 12021110011997. The next prime is 12021110012029. The reversal of 12021110012020 is 2021001112021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021110012029) 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, 4232783796 + ... + 4232786635.

It is an arithmetic number, because the mean of its divisors is an integer number (1066661874432).

Almost surely, 2^{12021110012020} is an apocalyptic number.

12021110012020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021110012020 is an abundant number, since it is smaller than the sum of its proper divisors (13578774974348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12021110012020 is a wasteful number, since it uses less digits than its factorization.

12021110012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8465570511 (or 8465570509 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12021110012020 its reverse (2021001112021), we get a palindrome (14042111124041).

The spelling of 12021110012020 in words is "twelve trillion, twenty-one billion, one hundred ten million, twelve thousand, twenty".