201012222006 has 144 divisors (see below), whose sum is σ = 459229103424. Its totient is φ = 63528300000.

The previous prime is 201012221987. The next prime is 201012222007. The reversal of 201012222006 is 600222210102.

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

It is a self number, because there is not a number n which added to its sum of digits gives 201012222006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201012222007) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 290900121 + ... + 290900811.

It is an arithmetic number, because the mean of its divisors is an integer number (3189090996).

Almost surely, 2^201012222006 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201012222006, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229614551712).

201012222006 is an abundant number, since it is smaller than the sum of its proper divisors (258216881418).

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

201012222006 is a wasteful number, since it uses less digits than its factorization.

201012222006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079 (or 1045 counting only the distinct ones).

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

Adding to 201012222006 its reverse (600222210102), we get a palindrome (801234432108).

The spelling of 201012222006 in words is "two hundred one billion, twelve million, two hundred twenty-two thousand, six".