111212000102120 has 32 divisors (see below), whose sum is σ = 250239420873000. Its totient is φ = 44482591926528.

The previous prime is 111212000102101. The next prime is 111212000102123. The reversal of 111212000102120 is 21201000212111.

It can be written as a sum of positive squares in 4 ways, for example, as 97298219808196 + 13913780293924 = 9863986^2 + 3730118^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111212000102095 and 111212000102104.

It is not an unprimeable number, because it can be changed into a prime (111212000102123) 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 7 ways as a sum of consecutive naturals, for example, 68187539 + ... + 69799458.

Almost surely, 2^{111212000102120} is an apocalyptic number.

111212000102120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111212000102120 is an abundant number, since it is smaller than the sum of its proper divisors (139027420770880).

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

111212000102120 is a wasteful number, since it uses less digits than its factorization.

111212000102120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138007157 (or 138007153 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111212000102120 its reverse (21201000212111), we get a palindrome (132413000314231).

The spelling of 111212000102120 in words is "one hundred eleven trillion, two hundred twelve billion, one hundred two thousand, one hundred twenty".