1122120012 has 48 divisors (see below), whose sum is σ = 2968098560. Its totient is φ = 327094848.

The previous prime is 1122119987. The next prime is 1122120049. The reversal of 1122120012 is 2100212211.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1122120012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186328 + ... + 192255.

Almost surely, 2^1122120012 is an apocalyptic number.

1122120012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1122120012 is an abundant number, since it is smaller than the sum of its proper divisors (1845978548).

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

1122120012 is a wasteful number, since it uses less digits than its factorization.

1122120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378622 (or 378620 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1122120012 is about 33498.0598244137. The cubic root of 1122120012 is about 1039.1536543847.

Adding to 1122120012 its reverse (2100212211), we get a palindrome (3222332223).

The spelling of 1122120012 in words is "one billion, one hundred twenty-two million, one hundred twenty thousand, twelve".