111010021212 has 12 divisors (see below), whose sum is σ = 259023382856. Its totient is φ = 37003340400.

The previous prime is 111010021159. The next prime is 111010021217. The reversal of 111010021212 is 212120010111.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 9250835101 = 111010021212 / (1 + 1 + 1 + 0 + 1 + 0 + 0 + 2 + 1 + 2 + 1 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111010021217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4625417539 + ... + 4625417562.

Almost surely, 2^111010021212 is an apocalyptic number.

111010021212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111010021212 is an abundant number, since it is smaller than the sum of its proper divisors (148013361644).

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

111010021212 is a wasteful number, since it uses less digits than its factorization.

111010021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9250835108 (or 9250835106 counting only the distinct ones).

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

Adding to 111010021212 its reverse (212120010111), we get a palindrome (323130031323).

The spelling of 111010021212 in words is "one hundred eleven billion, ten million, twenty-one thousand, two hundred twelve".