12020210202021 has 32 divisors (see below), whose sum is σ = 18489661820928. Its totient is φ = 6803773579200.

The previous prime is 12020210202019. The next prime is 12020210202041. The reversal of 12020210202021 is 12020201202021.

It is not a de Polignac number, because 12020210202021 - 2¹ = 12020210202019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020210202041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21181051 + ... + 21741143.

It is an arithmetic number, because the mean of its divisors is an integer number (577801931904).

Almost surely, 2^{12020210202021} is an apocalyptic number.

It is an amenable number.

12020210202021 is a deficient number, since it is larger than the sum of its proper divisors (6469451618907).

12020210202021 is a wasteful number, since it uses less digits than its factorization.

12020210202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569761.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 12020210202021 its reverse (12020201202021), we get a palindrome (24040411404042).

Subtracting from 12020210202021 its reverse (12020201202021), we obtain a square (9000000 = 3000²).

The spelling of 12020210202021 in words is "twelve trillion, twenty billion, two hundred ten million, two hundred two thousand, twenty-one".