1122021222012 has 36 divisors (see below), whose sum is σ = 2941265510456. Its totient is φ = 374007073680.

The previous prime is 1122021221989. The next prime is 1122021222017. The reversal of 1122021222012 is 2102221202211.

It is a happy number.

1122021222012 is a `hidden beast` number, since 1 + 1 + 220 + 212 + 220 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122021222017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 577170439 + ... + 577172382.

Almost surely, 2^{1122021222012} is an apocalyptic number.

1122021222012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1122021222012 is an abundant number, since it is smaller than the sum of its proper divisors (1819244288444).

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

1122021222012 is a wasteful number, since it uses less digits than its factorization.

1122021222012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154342840 (or 1154342826 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1122021222012 its reverse (2102221202211), we get a palindrome (3224242424223).

The spelling of 1122021222012 in words is "one trillion, one hundred twenty-two billion, twenty-one million, two hundred twenty-two thousand, twelve".