201121222230 has 96 divisors (see below), whose sum is σ = 528635147040. Its totient is φ = 53046758400.

The previous prime is 201121222171. The next prime is 201121222243. The reversal of 201121222230 is 32222121102.

201121222230 is a `hidden beast` number, since 201 + 1 + 212 + 22 + 230 = 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, 9251854 + ... + 9273566.

It is an arithmetic number, because the mean of its divisors is an integer number (5506616115).

Almost surely, 2^201121222230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201121222230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264317573520).

201121222230 is an abundant number, since it is smaller than the sum of its proper divisors (327513924810).

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

201121222230 is a wasteful number, since it uses less digits than its factorization.

201121222230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22846 (or 22843 counting only the distinct ones).

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

Adding to 201121222230 its reverse (32222121102), we get a palindrome (233343343332).

The spelling of 201121222230 in words is "two hundred one billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred thirty".