201220221104 has 20 divisors (see below), whose sum is σ = 445559061264. Its totient is φ = 86237237568.

The previous prime is 201220221043. The next prime is 201220221109. The reversal of 201220221104 is 401122022102.

201220221104 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×201220221104² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201220221109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 898304447 + ... + 898304670.

Almost surely, 2^201220221104 is an apocalyptic number.

It is an amenable number.

201220221104 is an abundant number, since it is smaller than the sum of its proper divisors (244338840160).

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

201220221104 is a wasteful number, since it uses less digits than its factorization.

201220221104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1796609132 (or 1796609126 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 201220221104 its reverse (401122022102), we get a palindrome (602342243206).

The spelling of 201220221104 in words is "two hundred one billion, two hundred twenty million, two hundred twenty-one thousand, one hundred four".