146220012 has 48 divisors (see below), whose sum is σ = 382597600. Its totient is φ = 48288960.

The previous prime is 146219999. The next prime is 146220017. The reversal of 146220012 is 210022641.

146220012 is a `hidden beast` number, since 1 + 462 + 200 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146220017) 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, 5562 + ... + 17982.

Almost surely, 2^146220012 is an apocalyptic number.

146220012 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 146220012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191298800).

146220012 is an abundant number, since it is smaller than the sum of its proper divisors (236377588).

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

146220012 is a wasteful number, since it uses less digits than its factorization.

146220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12543 (or 12535 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 146220012 is about 12092.1467076777. The cubic root of 146220012 is about 526.8281085660.

Adding to 146220012 its reverse (210022641), we get a palindrome (356242653).

The spelling of 146220012 in words is "one hundred forty-six million, two hundred twenty thousand, twelve".