1122222012 has 12 divisors (see below), whose sum is σ = 2618518056. Its totient is φ = 374074000.

The previous prime is 1122222007. The next prime is 1122222089. The reversal of 1122222012 is 2102222211.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1122221982 and 1122222000.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 46759239 + ... + 46759262.

It is an arithmetic number, because the mean of its divisors is an integer number (218209838).

Almost surely, 2^1122222012 is an apocalyptic number.

1122222012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1122222012 is an abundant number, since it is smaller than the sum of its proper divisors (1496296044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1122222012 is a wasteful number, since it uses less digits than its factorization.

1122222012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93518508 (or 93518506 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1122222012 is about 33499.5822660522. The cubic root of 1122222012 is about 1039.1851395676.

Adding to 1122222012 its reverse (2102222211), we get a palindrome (3224444223).

The spelling of 1122222012 in words is "one billion, one hundred twenty-two million, two hundred twenty-two thousand, twelve".