11021220212 has 12 divisors (see below), whose sum is σ = 19434366336. Its totient is φ = 5468544120.

The previous prime is 11021220193. The next prime is 11021220239. The reversal of 11021220212 is 21202212011.

11021220212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11021220212² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 10515908 + ... + 10516955.

It is an arithmetic number, because the mean of its divisors is an integer number (1619530528).

Almost surely, 2^11021220212 is an apocalyptic number.

It is an amenable number.

11021220212 is a deficient number, since it is larger than the sum of its proper divisors (8413146124).

11021220212 is a wasteful number, since it uses less digits than its factorization.

11021220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21032998 (or 21032996 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 11021220212 its reverse (21202212011), we get a palindrome (32223432223).

The spelling of 11021220212 in words is "eleven billion, twenty-one million, two hundred twenty thousand, two hundred twelve".