211102201212 has 144 divisors (see below), whose sum is σ = 586780508160. Its totient is φ = 58870482048.

The previous prime is 211102201207. The next prime is 211102201213. The reversal of 211102201212 is 212102201112.

It is a junction number, because it is equal to n+sod(n) for n = 211102201191 and 211102201200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211102201213) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10297989 + ... + 10318467.

It is an arithmetic number, because the mean of its divisors is an integer number (4074864640).

Almost surely, 2^211102201212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211102201212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293390254080).

211102201212 is an abundant number, since it is smaller than the sum of its proper divisors (375678306948).

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

211102201212 is a wasteful number, since it uses less digits than its factorization.

211102201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20920 (or 20911 counting only the distinct ones).

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

Adding to 211102201212 its reverse (212102201112), we get a palindrome (423204402324).

The spelling of 211102201212 in words is "two hundred eleven billion, one hundred two million, two hundred one thousand, two hundred twelve".