201100220121222 has 16 divisors (see below), whose sum is σ = 446889378047280. Its totient is φ = 67033406707056.

The previous prime is 201100220121193. The next prime is 201100220121223. The reversal of 201100220121222 is 222121022001102.

It is a happy number.

201100220121222 is a `hidden beast` number, since 2 + 0 + 1 + 100 + 220 + 121 + 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 = 201100220121195 and 201100220121204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201100220121223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1862039075143 + ... + 1862039075250.

It is an arithmetic number, because the mean of its divisors is an integer number (27930586127955).

Almost surely, 2^{201100220121222} is an apocalyptic number.

201100220121222 is an abundant number, since it is smaller than the sum of its proper divisors (245789157926058).

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

201100220121222 is a wasteful number, since it uses less digits than its factorization.

201100220121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3724078150404 (or 3724078150398 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 201100220121222 its reverse (222121022001102), we get a palindrome (423221242122324).

The spelling of 201100220121222 in words is "two hundred one trillion, one hundred billion, two hundred twenty million, one hundred twenty-one thousand, two hundred twenty-two".