1200011122212 has 48 divisors (see below), whose sum is σ = 3202360651392. Its totient is φ = 342610571520.

The previous prime is 1200011122183. The next prime is 1200011122213. The reversal of 1200011122212 is 2122211100021.

It is a junction number, because it is equal to n+sod(n) for n = 1200011122191 and 1200011122200.

It is not an unprimeable number, because it can be changed into a prime (1200011122213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5087089 + ... + 5317752.

It is an arithmetic number, because the mean of its divisors is an integer number (66715846904).

Almost surely, 2^{1200011122212} is an apocalyptic number.

1200011122212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1200011122212 is an abundant number, since it is smaller than the sum of its proper divisors (2002349529180).

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

1200011122212 is a wasteful number, since it uses less digits than its factorization.

1200011122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10406228 (or 10406226 counting only the distinct ones).

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

Adding to 1200011122212 its reverse (2122211100021), we get a palindrome (3322222222233).

The spelling of 1200011122212 in words is "one trillion, two hundred billion, eleven million, one hundred twenty-two thousand, two hundred twelve".