211021102212 has 24 divisors (see below), whose sum is σ = 492412756416. Its totient is φ = 70336055328.

The previous prime is 211021102189. The next prime is 211021102217. The reversal of 211021102212 is 212201120112.

It is a junction number, because it is equal to n+sod(n) for n = 211021102191 and 211021102200.

It is not an unprimeable number, because it can be changed into a prime (211021102217) 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 7 ways as a sum of consecutive naturals, for example, 331923 + ... + 729530.

It is an arithmetic number, because the mean of its divisors is an integer number (20517198184).

Almost surely, 2^211021102212 is an apocalyptic number.

It is an amenable number.

211021102212 is an abundant number, since it is smaller than the sum of its proper divisors (281391654204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211021102212 is a wasteful number, since it uses less digits than its factorization.

211021102212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078027 (or 1078025 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 211021102212 its reverse (212201120112), we get a palindrome (423222222324).

The spelling of 211021102212 in words is "two hundred eleven billion, twenty-one million, one hundred two thousand, two hundred twelve".