120111121212 has 48 divisors (see below), whose sum is σ = 282160814880. Its totient is φ = 39766309632.

The previous prime is 120111121189. The next prime is 120111121213. The reversal of 120111121212 is 212121111021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 120111121191 and 120111121200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120111121213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 996714 + ... + 1110702.

It is an arithmetic number, because the mean of its divisors is an integer number (5878350310).

Almost surely, 2^120111121212 is an apocalyptic number.

120111121212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

120111121212 is an abundant number, since it is smaller than the sum of its proper divisors (162049693668).

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

120111121212 is a wasteful number, since it uses less digits than its factorization.

120111121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114590 (or 114588 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 120111121212 its reverse (212121111021), we get a palindrome (332232232233).

The spelling of 120111121212 in words is "one hundred twenty billion, one hundred eleven million, one hundred twenty-one thousand, two hundred twelve".