212000211021 has 32 divisors (see below), whose sum is σ = 291855358080. Its totient is φ = 136782031104.

The previous prime is 212000211019. The next prime is 212000211029. The reversal of 212000211021 is 120112000212.

It is not a de Polignac number, because 212000211021 - 2¹ = 212000211019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212000210988 and 212000211006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212000211029) 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, 16099186 + ... + 16112348.

It is an arithmetic number, because the mean of its divisors is an integer number (9120479940).

Almost surely, 2^212000211021 is an apocalyptic number.

It is an amenable number.

212000211021 is a deficient number, since it is larger than the sum of its proper divisors (79855147059).

212000211021 is a wasteful number, since it uses less digits than its factorization.

212000211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13965.

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

Adding to 212000211021 its reverse (120112000212), we get a palindrome (332112211233).

The spelling of 212000211021 in words is "two hundred twelve billion, two hundred eleven thousand, twenty-one".