201122222221212 has 96 divisors (see below), whose sum is σ = 474588315855360. Its totient is φ = 66286139781120.

The previous prime is 201122222221211. The next prime is 201122222221237. The reversal of 201122222221212 is 212122222221102.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201122222221211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1737003873 + ... + 1737119655.

It is an arithmetic number, because the mean of its divisors is an integer number (4943628290160).

Almost surely, 2^{201122222221212} is an apocalyptic number.

It is an amenable number.

201122222221212 is an abundant number, since it is smaller than the sum of its proper divisors (273466093634148).

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

201122222221212 is a wasteful number, since it uses less digits than its factorization.

201122222221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119003 (or 119001 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 201122222221212 its reverse (212122222221102), we get a palindrome (413244444442314).

The spelling of 201122222221212 in words is "two hundred one trillion, one hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred twelve".