122121012220 has 24 divisors (see below), whose sum is σ = 262418176944. Its totient is φ = 47712395136.

The previous prime is 122121012191. The next prime is 122121012229. The reversal of 122121012220 is 22210121221.

It is a happy number.

122121012220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 122121012194 and 122121012203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122121012229) 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, 70999729 + ... + 71001448.

It is an arithmetic number, because the mean of its divisors is an integer number (10934090706).

Almost surely, 2^122121012220 is an apocalyptic number.

122121012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122121012220 is an abundant number, since it is smaller than the sum of its proper divisors (140297164724).

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

122121012220 is a wasteful number, since it uses less digits than its factorization.

122121012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142001229 (or 142001227 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 122121012220 its reverse (22210121221), we get a palindrome (144331133441).

The spelling of 122121012220 in words is "one hundred twenty-two billion, one hundred twenty-one million, twelve thousand, two hundred twenty".