202221201111012 has 144 divisors (see below), whose sum is σ = 541859323928832. Its totient is φ = 63369282862080.

The previous prime is 202221201110987. The next prime is 202221201111031. The reversal of 202221201111012 is 210111102122202.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2128529503 + ... + 2128624505.

It is an arithmetic number, because the mean of its divisors is an integer number (3762911971728).

Almost surely, 2^{202221201111012} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202221201111012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270929661964416).

202221201111012 is an abundant number, since it is smaller than the sum of its proper divisors (339638122817820).

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

202221201111012 is a wasteful number, since it uses less digits than its factorization.

202221201111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98978 (or 98973 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 202221201111012 its reverse (210111102122202), we get a palindrome (412332303233214).

The spelling of 202221201111012 in words is "two hundred two trillion, two hundred twenty-one billion, two hundred one million, one hundred eleven thousand, twelve".