122122221020020 has 192 divisors, whose sum is σ = 277922951792640. Its totient is φ = 44808535867392.

The previous prime is 122122221020011. The next prime is 122122221020069. The reversal of 122122221020020 is 20020122221221.

It is a super-2 number, since 2×122122221020020² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 122122221020020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 69427071901 + ... + 69427073659.

It is an arithmetic number, because the mean of its divisors is an integer number (1447515373920).

Almost surely, 2^{122122221020020} is an apocalyptic number.

122122221020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122122221020020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138961475896320).

122122221020020 is an abundant number, since it is smaller than the sum of its proper divisors (155800730772620).

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

122122221020020 is a wasteful number, since it uses less digits than its factorization.

122122221020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4314 (or 4312 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 122122221020020 its reverse (20020122221221), we get a palindrome (142142343241241).

The spelling of 122122221020020 in words is "one hundred twenty-two trillion, one hundred twenty-two billion, two hundred twenty-one million, twenty thousand, twenty".