11211021212 has 24 divisors (see below), whose sum is σ = 21866700240. Its totient is φ = 4998101760.

The previous prime is 11211021187. The next prime is 11211021247. The reversal of 11211021212 is 21212011211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4337339 + ... + 4339922.

It is an arithmetic number, because the mean of its divisors is an integer number (911112510).

Almost surely, 2^11211021212 is an apocalyptic number.

It is an amenable number.

11211021212 is a deficient number, since it is larger than the sum of its proper divisors (10655679028).

11211021212 is a wasteful number, since it uses less digits than its factorization.

11211021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8677301 (or 8677299 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11211021212 its reverse (21212011211), we get a palindrome (32423032423).

The spelling of 11211021212 in words is "eleven billion, two hundred eleven million, twenty-one thousand, two hundred twelve".