122439839183220 has 768 divisors, whose sum is σ = 392511538298880. Its totient is φ = 28319246936064.

The previous prime is 122439839183141. The next prime is 122439839183231. The reversal of 122439839183220 is 22381938934221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 17574252177 + ... + 17574259143.

It is an arithmetic number, because the mean of its divisors is an integer number (511082732160).

Almost surely, 2^{122439839183220} is an apocalyptic number.

122439839183220 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 122439839183220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196255769149440).

122439839183220 is an abundant number, since it is smaller than the sum of its proper divisors (270071699115660).

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

122439839183220 is a wasteful number, since it uses less digits than its factorization.

122439839183220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7284 (or 7282 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 57.

The spelling of 122439839183220 in words is "one hundred twenty-two trillion, four hundred thirty-nine billion, eight hundred thirty-nine million, one hundred eighty-three thousand, two hundred twenty".