111212010112 has 64 divisors (see below), whose sum is σ = 253251915840. Its totient is φ = 47653632000.

The previous prime is 111212010061. The next prime is 111212010197. The reversal of 111212010112 is 211010212111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×111212010112² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111212010092 and 111212010101.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8547612 + ... + 8560612.

It is an arithmetic number, because the mean of its divisors is an integer number (3957061185).

Almost surely, 2^111212010112 is an apocalyptic number.

It is an amenable number.

111212010112 is an abundant number, since it is smaller than the sum of its proper divisors (142039905728).

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

111212010112 is an equidigital number, since it uses as much as digits as its factorization.

111212010112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22569 (or 22557 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111212010112 its reverse (211010212111), we get a palindrome (322222222223).

The spelling of 111212010112 in words is "one hundred eleven billion, two hundred twelve million, ten thousand, one hundred twelve".