11222221012 has 24 divisors (see below), whose sum is σ = 20395560416. Its totient is φ = 5398813728.

The previous prime is 11222220967. The next prime is 11222221091. The reversal of 11222221012 is 21012222211.

It is a happy number.

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, 475383 + ... + 498430.

Almost surely, 2^11222221012 is an apocalyptic number.

It is an amenable number.

11222221012 is a deficient number, since it is larger than the sum of its proper divisors (9173339404).

11222221012 is a wasteful number, since it uses less digits than its factorization.

11222221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973927 (or 973925 counting only the distinct ones).

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

Adding to 11222221012 its reverse (21012222211), we get a palindrome (32234443223).

The spelling of 11222221012 in words is "eleven billion, two hundred twenty-two million, two hundred twenty-one thousand, twelve".