12020020110021 has 64 divisors (see below), whose sum is σ = 20190475984896. Its totient is φ = 6178828953600.

The previous prime is 12020020110019. The next prime is 12020020110029. The reversal of 12020020110021 is 12001102002021.

It is not a de Polignac number, because 12020020110021 - 2¹ = 12020020110019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12020020109979 and 12020020110006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020020110029) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 156608971 + ... + 156685703.

It is an arithmetic number, because the mean of its divisors is an integer number (315476187264).

Almost surely, 2^{12020020110021} is an apocalyptic number.

12020020110021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12020020110021 is a deficient number, since it is larger than the sum of its proper divisors (8170455874875).

12020020110021 is a wasteful number, since it uses less digits than its factorization.

12020020110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83842.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12020020110021 its reverse (12001102002021), we get a palindrome (24021122112042).

The spelling of 12020020110021 in words is "twelve trillion, twenty billion, twenty million, one hundred ten thousand, twenty-one".