16111212 has 48 divisors (see below), whose sum is σ = 40830720. Its totient is φ = 4915008.

The previous prime is 16111171. The next prime is 16111241. The reversal of 16111212 is 21211161.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 16111191 and 16111200.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21313 + ... + 22055.

It is an arithmetic number, because the mean of its divisors is an integer number (850640).

Almost surely, 2^16111212 is an apocalyptic number.

16111212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16111212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20415360).

16111212 is an abundant number, since it is smaller than the sum of its proper divisors (24719508).

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

16111212 is a wasteful number, since it uses less digits than its factorization.

16111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902 (or 900 counting only the distinct ones).

The product of its digits is 24, while the sum is 15.

The square root of 16111212 is about 4013.8774271270. The cubic root of 16111212 is about 252.5666889170.

Adding to 16111212 its reverse (21211161), we get a palindrome (37322373).

The spelling of 16111212 in words is "sixteen million, one hundred eleven thousand, two hundred twelve".