122121221221212 has 96 divisors (see below), whose sum is σ = 287296941195264. Its totient is φ = 40372618968000.

The previous prime is 122121221221133. The next prime is 122121221221231. The reversal of 122121221221212 is 212122122121221.

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

It is a congruent number.

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, 8092313787 + ... + 8092328877.

It is an arithmetic number, because the mean of its divisors is an integer number (2992676470784).

Almost surely, 2^{122121221221212} is an apocalyptic number.

122121221221212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

122121221221212 is an abundant number, since it is smaller than the sum of its proper divisors (165175719974052).

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

122121221221212 is a wasteful number, since it uses less digits than its factorization.

122121221221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22119 (or 22117 counting only the distinct ones).

The product of its digits is 512, while the sum is 24.

Adding to 122121221221212 its reverse (212122122121221), we get a palindrome (334243343342433).

Subtracting 122121221221212 from its reverse (212122122121221), we obtain a palindrome (90000900900009).

The spelling of 122121221221212 in words is "one hundred twenty-two trillion, one hundred twenty-one billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred twelve".