111101011212 has 24 divisors (see below), whose sum is σ = 261802385712. Its totient is φ = 36667000000.

The previous prime is 111101011211. The next prime is 111101011213. The reversal of 111101011212 is 212110101111.

It is an interprime number because it is at equal distance from previous prime (111101011211) and next prime (111101011213).

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 (111101011211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45832539 + ... + 45834962.

It is an arithmetic number, because the mean of its divisors is an integer number (10908432738).

Almost surely, 2^111101011212 is an apocalyptic number.

111101011212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111101011212 is an abundant number, since it is smaller than the sum of its proper divisors (150701374500).

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

111101011212 is a wasteful number, since it uses less digits than its factorization.

111101011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91667609 (or 91667607 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 111101011212 its reverse (212110101111), we get a palindrome (323211112323).

The spelling of 111101011212 in words is "one hundred eleven billion, one hundred one million, eleven thousand, two hundred twelve".