11222201212 has 24 divisors (see below), whose sum is σ = 20120819040. Its totient is φ = 5475025920.

The previous prime is 11222201209. The next prime is 11222201213. The reversal of 11222201212 is 21210222211.

It is a happy number.

It is a super-2 number, since 2×11222201212² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222201213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176137 + ... + 231232.

It is an arithmetic number, because the mean of its divisors is an integer number (838367460).

Almost surely, 2^11222201212 is an apocalyptic number.

It is an amenable number.

11222201212 is a deficient number, since it is larger than the sum of its proper divisors (8898617828).

11222201212 is a wasteful number, since it uses less digits than its factorization.

11222201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407541 (or 407539 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 11222201212 its reverse (21210222211), we get a palindrome (32432423423).

The spelling of 11222201212 in words is "eleven billion, two hundred twenty-two million, two hundred one thousand, two hundred twelve".