122612571620 has 144 divisors (see below), whose sum is σ = 332294477760. Its totient is φ = 37568966400.

The previous prime is 122612571559. The next prime is 122612571701. The reversal of 122612571620 is 26175216221.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 539630 + ... + 732410.

It is an arithmetic number, because the mean of its divisors is an integer number (2307600540).

Almost surely, 2^122612571620 is an apocalyptic number.

122612571620 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 122612571620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166147238880).

122612571620 is an abundant number, since it is smaller than the sum of its proper divisors (209681906140).

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

122612571620 is a wasteful number, since it uses less digits than its factorization.

122612571620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192874 (or 192865 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

Adding to 122612571620 its reverse (26175216221), we get a palindrome (148787787841).

The spelling of 122612571620 in words is "one hundred twenty-two billion, six hundred twelve million, five hundred seventy-one thousand, six hundred twenty".