4006012212 has 144 divisors (see below), whose sum is σ = 11203920000. Its totient is φ = 1201229568.

The previous prime is 4006012183. The next prime is 4006012253. The reversal of 4006012212 is 2122106004.

4006012212 is a `hidden beast` number, since 40 + 0 + 601 + 2 + 21 + 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 an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2343214 + ... + 2344922.

It is an arithmetic number, because the mean of its divisors is an integer number (77805000).

Almost surely, 2^4006012212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4006012212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5601960000).

4006012212 is an abundant number, since it is smaller than the sum of its proper divisors (7197907788).

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

4006012212 is a wasteful number, since it uses less digits than its factorization.

4006012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1910 (or 1905 counting only the distinct ones).

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

The square root of 4006012212 is about 63293.0660657232. The cubic root of 4006012212 is about 1588.1959698044.

Adding to 4006012212 its reverse (2122106004), we get a palindrome (6128118216).

The spelling of 4006012212 in words is "four billion, six million, twelve thousand, two hundred twelve".