16021212 has 24 divisors (see below), whose sum is σ = 37556736. Its totient is φ = 5315568.

The previous prime is 16021193. The next prime is 16021231. The reversal of 16021212 is 21212061.

It is an interprime number because it is at equal distance from previous prime (16021193) and next prime (16021231).

It is a junction number, because it is equal to n+sod(n) for n = 16021191 and 16021200.

It is a congruent number.

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, 318 + ... + 5669.

It is an arithmetic number, because the mean of its divisors is an integer number (1564864).

Almost surely, 2^16021212 is an apocalyptic number.

16021212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16021212 is an abundant number, since it is smaller than the sum of its proper divisors (21535524).

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

16021212 is a wasteful number, since it uses less digits than its factorization.

16021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6217 (or 6215 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 16021212 is about 4002.6506217755. The cubic root of 16021212 is about 252.0955168272.

Adding to 16021212 its reverse (21212061), we get a palindrome (37233273).

The spelling of 16021212 in words is "sixteen million, twenty-one thousand, two hundred twelve".