1121022211212 has 96 divisors (see below), whose sum is σ = 2919659420160. Its totient is φ = 371966886720.

The previous prime is 1121022211181. The next prime is 1121022211219. The reversal of 1121022211212 is 2121122201211.

1121022211212 is a `hidden beast` number, since 11 + 210 + 22 + 211 + 212 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (1121022211219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23319433 + ... + 23367455.

It is an arithmetic number, because the mean of its divisors is an integer number (30413118960).

Almost surely, 2^{1121022211212} is an apocalyptic number.

1121022211212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1121022211212 is an abundant number, since it is smaller than the sum of its proper divisors (1798637208948).

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

1121022211212 is a wasteful number, since it uses less digits than its factorization.

1121022211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49020 (or 49012 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1121022211212 its reverse (2121122201211), we get a palindrome (3242144412423).

The spelling of 1121022211212 in words is "one trillion, one hundred twenty-one billion, twenty-two million, two hundred eleven thousand, two hundred twelve".