2212000210021 has 12 divisors (see below), whose sum is σ = 2724504461388. Its totient is φ = 1784470756992.

The previous prime is 2212000210009. The next prime is 2212000210027. The reversal of 2212000210021 is 1200120002122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2024675713921 + 187324496100 = 1422911^2 + 432810^2 .

It is not a de Polignac number, because 2212000210021 - 2¹⁹ = 2211999685733 is a prime.

It is a Duffinian number.

2212000210021 is a modest number, since divided by 210021 gives 22120 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 2212000209983 and 2212000210010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212000210027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1327730386 + ... + 1327732051.

It is an arithmetic number, because the mean of its divisors is an integer number (227042038449).

Almost surely, 2^{2212000210021} is an apocalyptic number.

It is an amenable number.

2212000210021 is a deficient number, since it is larger than the sum of its proper divisors (512504251367).

2212000210021 is a wasteful number, since it uses less digits than its factorization.

2212000210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2655462468 (or 2655462461 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2212000210021 its reverse (1200120002122), we get a palindrome (3412120212143).

The spelling of 2212000210021 in words is "two trillion, two hundred twelve billion, two hundred ten thousand, twenty-one".