12121222111122 has 64 divisors (see below), whose sum is σ = 24586399918080. Its totient is φ = 3983525956800.

The previous prime is 12121222111091. The next prime is 12121222111133. The reversal of 12121222111122 is 22111122212121.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147773373 + ... + 147855375.

It is an arithmetic number, because the mean of its divisors is an integer number (384162498720).

Almost surely, 2^{12121222111122} is an apocalyptic number.

12121222111122 is an abundant number, since it is smaller than the sum of its proper divisors (12465177806958).

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

12121222111122 is a wasteful number, since it uses less digits than its factorization.

12121222111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83359.

The product of its digits is 128, while the sum is 21.

Adding to 12121222111122 its reverse (22111122212121), we get a palindrome (34232344323243).

The spelling of 12121222111122 in words is "twelve trillion, one hundred twenty-one billion, two hundred twenty-two million, one hundred eleven thousand, one hundred twenty-two".