1100122212 has 48 divisors (see below), whose sum is σ = 2961100800.
Its totient is φ = 311380512.
The previous prime is 1100122181. The next prime is 1100122217. The reversal of 1100122212 is 2122210011.
It is a Harshad number since it is a multiple of its sum of digits (12).
It is not an unprimeable number, because it can be changed into a prime (1100122217) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52212 + ... + 70187.
It is an arithmetic number, because the mean of its divisors is an integer number (61689600).
Almost surely, 21100122212 is an apocalyptic number.
1100122212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
1100122212 is an abundant number, since it is smaller than the sum of its proper divisors (1860978588).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1100122212 is a wasteful number, since it uses less digits than its factorization.
1100122212 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 122520 (or 122518 counting only the distinct ones).
The product of its (nonzero) digits is 16, while the sum is 12.
The square root of 1100122212 is about 33168.0902676051.
The cubic root of 1100122212 is about 1032.3183434399.
Adding to 1100122212 its reverse (2122210011), we get a palindrome (3222332223).
The spelling of 1100122212 in words is "one billion, one hundred million, one hundred twenty-two thousand, two hundred twelve".