1100020111212 has 48 divisors (see below), whose sum is σ = 2875728264192. Its totient is φ = 324330252480.

The previous prime is 1100020111189. The next prime is 1100020111219. The reversal of 1100020111212 is 2121110200011.

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 (1100020111219) 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, 112609788 + ... + 112619555.

It is an arithmetic number, because the mean of its divisors is an integer number (59911005504).

Almost surely, 2^{1100020111212} is an apocalyptic number.

1100020111212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1100020111212 is an abundant number, since it is smaller than the sum of its proper divisors (1775708152980).

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

1100020111212 is a wasteful number, since it uses less digits than its factorization.

1100020111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225229398 (or 225229396 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1100020111212 its reverse (2121110200011), we get a palindrome (3221130311223).

The spelling of 1100020111212 in words is "one trillion, one hundred billion, twenty million, one hundred eleven thousand, two hundred twelve".