1100120221212 has 24 divisors (see below), whose sum is σ = 2569120752912. Its totient is φ = 366396230400.

The previous prime is 1100120221169. The next prime is 1100120221223. The reversal of 1100120221212 is 2121220210011.

It is a super-2 number, since 2×1100120221212² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1100120221191 and 1100120221200.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 38798989 + ... + 38827332.

It is an arithmetic number, because the mean of its divisors is an integer number (107046698038).

Almost surely, 2^{1100120221212} is an apocalyptic number.

1100120221212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1100120221212 is an abundant number, since it is smaller than the sum of its proper divisors (1469000531700).

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

1100120221212 is a wasteful number, since it uses less digits than its factorization.

1100120221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77627509 (or 77627507 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1100120221212 its reverse (2121220210011), we get a palindrome (3221340431223).

The spelling of 1100120221212 in words is "one trillion, one hundred billion, one hundred twenty million, two hundred twenty-one thousand, two hundred twelve".