12201211221122 has 256 divisors, whose sum is σ = 25694317670400. Its totient is φ = 4202408770560.

The previous prime is 12201211221107. The next prime is 12201211221211. The reversal of 12201211221122 is 22112211210221.

It is a junction number, because it is equal to n+sod(n) for n = 12201211221094 and 12201211221103.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 301296308 + ... + 301336800.

It is an arithmetic number, because the mean of its divisors is an integer number (100368428400).

Almost surely, 2^{12201211221122} is an apocalyptic number.

12201211221122 is an abundant number, since it is smaller than the sum of its proper divisors (13493106449278).

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

12201211221122 is a wasteful number, since it uses less digits than its factorization.

12201211221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40681.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12201211221122 its reverse (22112211210221), we get a palindrome (34313422431343).

The spelling of 12201211221122 in words is "twelve trillion, two hundred one billion, two hundred eleven million, two hundred twenty-one thousand, one hundred twenty-two".