12122201122122 has 64 divisors (see below), whose sum is σ = 29843769118464. Its totient is φ = 3196581373440.

The previous prime is 12122201122121. The next prime is 12122201122147. The reversal of 12122201122122 is 22122110222121.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (12122201122121) 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, 1951222 + ... + 5296382.

It is an arithmetic number, because the mean of its divisors is an integer number (466308892476).

Almost surely, 2^{12122201122122} is an apocalyptic number.

12122201122122 is an abundant number, since it is smaller than the sum of its proper divisors (17721567996342).

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

12122201122122 is a wasteful number, since it uses less digits than its factorization.

12122201122122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3351823.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 12122201122122 its reverse (22122110222121), we get a palindrome (34244311344243).

Subtracting 12122201122122 from its reverse (22122110222121), we obtain a palindrome (9999909099999).

The spelling of 12122201122122 in words is "twelve trillion, one hundred twenty-two billion, two hundred one million, one hundred twenty-two thousand, one hundred twenty-two".