11221200021212 has 12 divisors (see below), whose sum is σ = 19969932241560. Its totient is φ = 5515505095056.

The previous prime is 11221200021173. The next prime is 11221200021253. The reversal of 11221200021212 is 21212000212211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23773728623 + ... + 23773729094.

It is an arithmetic number, because the mean of its divisors is an integer number (1664161020130).

Almost surely, 2^{11221200021212} is an apocalyptic number.

It is an amenable number.

11221200021212 is a deficient number, since it is larger than the sum of its proper divisors (8748732220348).

11221200021212 is a wasteful number, since it uses less digits than its factorization.

11221200021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47547457780 (or 47547457778 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 11221200021212 its reverse (21212000212211), we get a palindrome (32433200233423).

The spelling of 11221200021212 in words is "eleven trillion, two hundred twenty-one billion, two hundred million, twenty-one thousand, two hundred twelve".