122121212012220 has 24 divisors (see below), whose sum is σ = 341939393634384. Its totient is φ = 32565656536576.

The previous prime is 122121212012209. The next prime is 122121212012227. The reversal of 122121212012220 is 22210212121221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122121212012227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1017676766709 + ... + 1017676766828.

It is an arithmetic number, because the mean of its divisors is an integer number (14247474734766).

Almost surely, 2^{122121212012220} is an apocalyptic number.

122121212012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122121212012220 is an abundant number, since it is smaller than the sum of its proper divisors (219818181622164).

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

122121212012220 is a wasteful number, since it uses less digits than its factorization.

122121212012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2035353533549 (or 2035353533547 counting only the distinct ones).

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

Adding to 122121212012220 its reverse (22210212121221), we get a palindrome (144331424133441).

The spelling of 122121212012220 in words is "one hundred twenty-two trillion, one hundred twenty-one billion, two hundred twelve million, twelve thousand, two hundred twenty".