22000212002021 has 24 divisors (see below), whose sum is σ = 24210870710040. Its totient is φ = 19976366868480.

The previous prime is 22000212002011. The next prime is 22000212002081. The reversal of 22000212002021 is 12020021200022.

It can be written as a sum of positive squares in 4 ways, for example, as 592137945025 + 21408074056996 = 769505^2 + 4626886^2 .

It is not a de Polignac number, because 22000212002021 - 2¹⁰ = 22000212000997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22000212001987 and 22000212002005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22000212002011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 560967005 + ... + 561006221.

It is an arithmetic number, because the mean of its divisors is an integer number (1008786279585).

Almost surely, 2^{22000212002021} is an apocalyptic number.

It is an amenable number.

22000212002021 is a deficient number, since it is larger than the sum of its proper divisors (2210658708019).

22000212002021 is a wasteful number, since it uses less digits than its factorization.

22000212002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44645 (or 44634 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22000212002021 its reverse (12020021200022), we get a palindrome (34020233202043).

The spelling of 22000212002021 in words is "twenty-two trillion, two hundred twelve million, two thousand, twenty-one".