201122222210 has 64 divisors (see below), whose sum is σ = 452867514624. Its totient is φ = 62608377600.

The previous prime is 201122222141. The next prime is 201122222263. The reversal of 201122222210 is 12222221102.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1756076 + ... + 1867095.

It is an arithmetic number, because the mean of its divisors is an integer number (7076054916).

Almost surely, 2^201122222210 is an apocalyptic number.

201122222210 is an abundant number, since it is smaller than the sum of its proper divisors (251745292414).

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

201122222210 is a wasteful number, since it uses less digits than its factorization.

201122222210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3623259.

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

Adding to 201122222210 its reverse (12222221102), we get a palindrome (213344443312).

The spelling of 201122222210 in words is "two hundred one billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred ten".