1122121102212 has 144 divisors (see below), whose sum is σ = 3100910904000. Its totient is φ = 339314976000.

The previous prime is 1122121102189. The next prime is 1122121102217. The reversal of 1122121102212 is 2122011212211.

1122121102212 is a `hidden beast` number, since 11 + 221 + 211 + 0 + 221 + 2 = 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 (1122121102217) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 748579039 + ... + 748580537.

It is an arithmetic number, because the mean of its divisors is an integer number (21534103500).

Almost surely, 2^{1122121102212} is an apocalyptic number.

1122121102212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1122121102212 is an abundant number, since it is smaller than the sum of its proper divisors (1978789801788).

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

1122121102212 is a wasteful number, since it uses less digits than its factorization.

1122121102212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4274 (or 4269 counting only the distinct ones).

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

Adding to 1122121102212 its reverse (2122011212211), we get a palindrome (3244132314423).

The spelling of 1122121102212 in words is "one trillion, one hundred twenty-two billion, one hundred twenty-one million, one hundred two thousand, two hundred twelve".