11110212211212 has 48 divisors (see below), whose sum is σ = 28804934215680. Its totient is φ = 3703316598864.

The previous prime is 11110212211157. The next prime is 11110212211253. The reversal of 11110212211212 is 21211221201111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3461793 + ... + 5848455.

It is an arithmetic number, because the mean of its divisors is an integer number (600102796160).

Almost surely, 2^{11110212211212} is an apocalyptic number.

11110212211212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11110212211212 is an abundant number, since it is smaller than the sum of its proper divisors (17694722004468).

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

11110212211212 is a wasteful number, since it uses less digits than its factorization.

11110212211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2429779 (or 2429771 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 11110212211212 its reverse (21211221201111), we get a palindrome (32321433412323).

It can be divided in two parts, 1111021 and 2211212, that added together give a palindrome (3322233).

The spelling of 11110212211212 in words is "eleven trillion, one hundred ten billion, two hundred twelve million, two hundred eleven thousand, two hundred twelve".