201222201222 has 96 divisors (see below), whose sum is σ = 503563754304. Its totient is φ = 56881440000.

The previous prime is 201222201217. The next prime is 201222201239. The reversal of 201222201222 is 222102222102.

201222201222 is a `hidden beast` number, since 20 + 1 + 222 + 201 + 222 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 201222201195 and 201222201204.

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, 20318472 + ... + 20328372.

It is an arithmetic number, because the mean of its divisors is an integer number (5245455774).

Almost surely, 2^201222201222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201222201222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251781877152).

201222201222 is an abundant number, since it is smaller than the sum of its proper divisors (302341553082).

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

201222201222 is a wasteful number, since it uses less digits than its factorization.

201222201222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11614 (or 11611 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 201222201222 its reverse (222102222102), we get a palindrome (423324423324).

The spelling of 201222201222 in words is "two hundred one billion, two hundred twenty-two million, two hundred one thousand, two hundred twenty-two".