12021200212021 has 32 divisors (see below), whose sum is σ = 16306748252928. Its totient is φ = 8557477079040.

The previous prime is 12021200212003. The next prime is 12021200212037.

It is a happy number.

12021200212021 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 12021200212021 - 2¹⁷ = 12021200080949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12021200211986 and 12021200212004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021200212001) 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, 61805950 + ... + 62000143.

It is an arithmetic number, because the mean of its divisors is an integer number (509585882904).

Almost surely, 2^{12021200212021} is an apocalyptic number.

12021200212021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12021200212021 is a deficient number, since it is larger than the sum of its proper divisors (4285548040907).

12021200212021 is a wasteful number, since it uses less digits than its factorization.

12021200212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123806221.

The product of its (nonzero) digits is 64, while the sum is 16.

It can be divided in two parts, 12021200 and 212021, that added together give a palindrome (12233221).

The spelling of 12021200212021 in words is "twelve trillion, twenty-one billion, two hundred million, two hundred twelve thousand, twenty-one".