122143122240 has 112 divisors (see below), whose sum is σ = 388221150912. Its totient is φ = 32536498176.

The previous prime is 122143122191. The next prime is 122143122251. The reversal of 122143122240 is 42221341221.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 122143122240.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 831627 + ... + 967413.

It is an arithmetic number, because the mean of its divisors is an integer number (3466260276).

Almost surely, 2^122143122240 is an apocalyptic number.

122143122240 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 122143122240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194110575456).

122143122240 is an abundant number, since it is smaller than the sum of its proper divisors (266078028672).

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

122143122240 is a wasteful number, since it uses less digits than its factorization.

122143122240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136744 (or 136734 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 122143122240 its reverse (42221341221), we get a palindrome (164364463461).

The spelling of 122143122240 in words is "one hundred twenty-two billion, one hundred forty-three million, one hundred twenty-two thousand, two hundred forty".