201122212200 has 384 divisors, whose sum is σ = 768633304320. Its totient is φ = 42364108800.

The previous prime is 201122212163. The next prime is 201122212219. The reversal of 201122212200 is 2212221102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 201122212200.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 36961480 + ... + 36966920.

It is an arithmetic number, because the mean of its divisors is an integer number (2001649230).

Almost surely, 2^201122212200 is an apocalyptic number.

201122212200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201122212200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (384316652160).

201122212200 is an abundant number, since it is smaller than the sum of its proper divisors (567511092120).

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

201122212200 is a wasteful number, since it uses less digits than its factorization.

201122212200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6157 (or 6148 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 201122212200 its reverse (2212221102), we get a palindrome (203334433302).

The spelling of 201122212200 in words is "two hundred one billion, one hundred twenty-two million, two hundred twelve thousand, two hundred".